The audience guarantee and the make-good: dated evidence for the Calidescope study

Prepared 2026-09-30. Method: MADDB first, then WebSearch/WebFetch only. Every claim carries a URL and a date. Items marked [FOLKLORE-RISK] are widely repeated but rest on one source. Items marked [CONTESTED] have conflicting sources in the record.

Caveat on method: WebFetch returns a machine summary of each page, not raw text. Quotes I rely on for the argument (Ephron/Ad Age, Warner, Kozack, Adlman, Kane, Rose, LeFurgy, Otremba, Anker, Morgan) were re-fetched with a "copy verbatim" prompt and matched. All quotes should still be checked against the live page before print.

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0. Verdict up front

PARTLY RIGHT. The first half holds firmly: the industry invented guarantee-plus-make-good decades ago, it runs on it at tens of billions of dollars a year, and it has bolted the same mechanism onto each new delivery metric (impressions, viewability, fraud, attention). The second half needs rewriting. "We stopped one rung short of the sale" implies nobody climbed the last rung. The record says otherwise. Sellers have guaranteed a sales, ROI or conversion result WITH a stated remedy at least five times since 2011 (Meredith 2011, MPA magazines 2015, Simulmedia 2015, Westwood One 2017, LG Ads 2022), and twice more with no remedy stated in the coverage (NBCU 2019, AMC Networks 2025). Each stayed narrow, conditioned, and small, and the trade press keeps announcing it as new. The stronger and true claim: the rung has been climbed repeatedly and abandoned or confined every time. That is a better finding than "never tried", but it kills any slide that says "nobody has done this."

Second correction: "outcome-priced" and "outcome-guaranteed" are different mechanisms. Pay-per-inquiry, affiliate, CPC and CPA make the price contingent on the result (the seller carries all the risk from the first dollar). The audience guarantee is a prepaid buy with a make-good. The outcome pricing lineage is old and lives in the lower-status corners, as you suspected. What is rare is the high-status version: a prepaid brand buy where the seller guarantees a business result and pays a remedy on a miss.

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1. Timeline (dated, sourced)

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2. Area 1: The audience guarantee and the make-good

Origin: murkier than the folklore, and older than TV

• The tidy origin story is "ABC and American Home Products, 1967." Source: an Ad Age piece in Erwin Ephron's voice: "The first guaranteed CPM was negotiated by American Home Products Corp. with ABC in 1967. It was an informal commitment by a network to protect a buyer who bought early. The networks soon learned buyers would pay a premium for a guaranteed buy and wouldn't be as picky about the programs." (https://adage.com/article/special-report-hoagtest01/tv-nets-upfront/54781/; fetch showed no byline or date). Bouvard (Westwood One, 2017) repeats it and credits Ephron. I found no independent primary source (no 1967 trade-press item). Ephron is a credible insider, but this is one voice repeated. [FOLKLORE-RISK]
• The guarantee idea predates TV. In February 1956 Broadcasting-Telecasting reports Mutual's radio circulation guarantee, says it "goes farther than print media's circulation guarantees", says the idea "was offered on a limited basis by NBC a little more than four years ago", and records the remedy choice: "The use of make-good time rather than rebates for unmet guarantees was decided upon, Mr. Trenner said, because 'the advertiser appropriates money to reach a given number of people, not to get it back.'" (https://lantern.mediahist.org/catalog/broadcastingtele50unse_0860). So "first instance" in network broadcasting is at least 1952 (NBC radio, limited) and 1956 (Mutual, broad). Print circulation guarantees pre-date both, but I did not source a date.
• Competitive pressure, per Ephron: the guarantee was what networks offered to get buyers to commit early and take unpicked programming; it moved risk from advertiser to network. "The move from sponsorship in the 1960s had reduced advertiser risk. The CPM guarantees of the 1970s and 1980s eliminated it entirely." I found no source naming a specific competitor-versus-competitor trigger. Mutual's 1956 plan is documented as a bid to differentiate radio's weakest network. Not established: who forced the TV networks' hand.
• Upfront: begins 1962 with ABC (Kaplan/AdExchanger 2013-07-26; Digiday 2022). Ephron says "in the earliest days of TV, everything was sold upfront" (sponsorship), so 1962 is the start of the modern packaged-spot upfront, not the first advance purchase.

The mechanism

• Guarantee: network commits to a ratings or impression floor (usually demo-specific) for a package of inventory. Simulmedia glossary defines the remedy unit: "An Audience Deficiency Unit is a contractual allocation of advertising slots offered to an advertiser or advertising agency at no cost." (https://simulmedia.com/tv-advertising-glossary/what-is-an-audience-deficiency-unit)
• Post-analysis: after the flight, delivery is measured (Nielsen historically) against the guarantee. Shortfall is computed.
• Remedy: usually more inventory, not cash. Museum of Broadcast Communications: "If a network does not deliver the guaranteed ratings, it will run free commercials, called 'make-goods,' to compensate for the rating shortfall." (https://www.museum.tv/tv-encyclopedia-4/cost-per-thousand-and-cost-per-point; no date or author in fetch). Digiday 2022 (Tim Peterson) quotes ADUs as an IOU to "run the advertisers' ads elsewhere".
• Known friction: the remedy is often late or thin. ANA blog, Cliff Campeau, 2021-02: "TV networks are overdue on their bills to advertisers", some owed for buys "one to two years ago"; "A guarantee is a guarantee — period." (https://ana.net/blogs/show/id/mm-blog-2021-02-ad-dollars-held-hostage). Ad Age 2022-03-07 (ANA Media Conference): P&G's Marc Pritchard said network forecasts are "always wrong" (paraphrase in fetch); Manuel Reyes of Cortex Media said ADUs are frequently poorly monitored (https://adage.com/article/media/ana-media-takeaways-include-media-strength-measurement-suspicion/2403866/).
• The 1990 episode shows the guarantee is bounded by the currency: networks changed the rules when Nielsen's people-meter showed lower viewing. ABC research director Larry Hyams: "We're trying to make ABC accountable for our program performance, without bearing the liability we feel is caused by the Nielsen 'people-meter' methodology." Betsy Frank, Saatchi & Saatchi: "The networks don't like the rules, so they're changing them. We're very, very angry." (CSM 1990-06-08).

Scale now

• Media Dynamics, reported by MediaPost 2026-08-11: prime-time upfront $33.7B for 2026-27, up 9%; streaming $17.2B (+30%), cable $8.0B, broadcast $8.6B. Prime time only.
• Media Dynamics 2025-26 release (2025-08-14): $31B prime time; "the upfront extends well beyond primetime ... combined, can amount to $10-12 billion" (https://www.mediadynamicsinc.com/uploads/files/UPFRONT-2025-26-PRESS-RELEASE-9iI.pdf).
• Not all of that volume is guarantee-backed; I found no current statistic for the guaranteed share. The only figure is Ephron's 85% of prime-time sales in 1985.
• A ppc.land page gave a slightly different number ($33.8B); use the MediaPost/Media Dynamics figure.

Live example of the mechanism failing and being remedied

• Netflix ad tier, reported 2022-12-16: delivered "about 80% of the expected audience" to some advertisers; remedy was refunds/unused funds released at quarter end (eMarketer summarising Digiday).
• NBCU Tokyo Olympics opening, Ad Age 2021-07-26 headline: "NBCU went out this weekend with make-goods as ratings for the opener hit a 33-year low." (snippet via MADDB: https://maddb.ai/news/olympics-opening-ceremony-ratings-miss-advertiser-expectations). Article body not retrievable.

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3. Area 2: What the guarantee has been attached to, in order

1. Circulation / ratings / audience delivery: radio 1952 (NBC, limited) and 1956 (Mutual); network TV CPM guarantee 1967 (Ephron claim); mainstream by 1985.
2. Digital impressions: CNET, June 1995: "We were the first to sell banner ads with guaranteed audience deliveries." (Lon Otremba, Digiday 2017-11-08). IAB founding chairman Rich LeFurgy: "This helped us figure out how to price stuff, so when we had CPM guarantees, it made make-goods possible, just like in television." (Digiday, 2023-12-04, https://digiday.com/media/digidays-history-of-ad-tech-in-the-beginning/). This is the cleanest sourced line showing the TV mechanism was copied into digital.
3. Viewability: Google vCPM on the Display Network 2013-12-12 (Drum) and all CPM campaigns 2015-11-17; MRC lifts the transaction advisory 2014-03-31 (display) and 2014-06-30 (video); ANA tells members to pay only for measurably viewable ads 2015-04-27 ("If an ad is not viewable, then the marketer should not bear the obligation to pay for it." Bob Liodice). Guaranteed-viewable exchange products: AppNexus/GroupM 2017-2018; AdExchanger 2018-06-18: "Viewability guarantees aren't new." Note the remedy here is non-payment (the seller eats the unviewable impression), not a make-good of extra inventory. Advertiser buyers (ANA, GroupM) drove it, not sellers.
4. Fraud / invalid traffic: earliest remedy I can source is Google's invalid-click credits, settled in Lane's Gifts for up to $90M in fees and ad credits (2006-03-09). MRC final IVT guidelines 2015-10-29; ANA/White Ops sized the problem 2014-12-09 ($6.3B). This remedy was forced by litigation, not offered as a sales feature. I did not find a dated first "fraud-free guarantee" from a seller; AdExchanger 2018-02-01 lists "Fraud-free" among secondary guarantees offered "over the past year."
5. Attention: Vevo/Adelaide "Attention Guaranteed" 2026-01-28 ("secures a minimum attention score for a brand's campaign across all screens"); Duolingo AU guarantees 2026-09-15 ("a minimum level of media quality ... using AU, Adelaide's omnichannel metric that predicts a placement's likelihood of capturing attention and driving business outcomes"). Neither announcement states a remedy. Note the metric is a prediction of likelihood, not a measured outcome.
6. Outcomes: see Area 3.

Pattern worth using: in each case the guarantee attaches to a metric only after an independent, accredited measurer exists (Nielsen for ratings; MRC for viewability and IVT; Adelaide for AU). The sequence is measurement standard first, guarantee second. Outcomes lack the equivalent standard.

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4. Outcome guarantees with a stated remedy (the key section)

All are real, dated, and sourced. None is universal; each is conditioned.

1. Meredith "Engagement Dividend", 2011-07-25 (Meredith release; MediaPost). Guarantee: sales increase for participating brands, measured with Nielsen Homescan. Remedy per MediaPost 2011-11-28: "make good any shortfalls on these guarantees with additional advertising." MediaPost 2013-05-06: >$1 incremental sales per $1; shortfall remedied with free pages or possibly cash. Conditions: minimum commitment over 12 months across multiple titles, national schedules, category thresholds. Track record claim: Retail Dive 2015-10-13, Meredith "has never had to honor its guarantee" in four years; O'Grady 2018-02-01: Meredith "has guaranteed a lift in sales for more than 70 campaigns and hasn't yet missed one" (that is a claim by a person whose firm measured it).
2. MPA Print Magazine Sales Guarantee, 2015-10 (16 publishers, 72% of magazine audience). Remedy: "Advertisers [receive] their money back or free pages if product sales don't increase" (Retail Dive 2015-10-13). Conditions: campaign reaching 125M adults at least three times in 12 months (about 150 GRPs), third-party trackable product category, advertiser must commit to a larger campaign than the previous year (Associations Now, 2015-10).
3. Simulmedia, 2015-03-05. Guarantee: higher ROAS against the advertiser's designated business outcome than their concurrent TV, for $1M+ in a month. Remedy: "make-good ad inventory based on whatever percentage of the advertisers business goal it falls short on." CEO Dave Morgan: "We realized that the best and easiest way to shift the conversation with TV buyers and advertisers from [ratings and demographic buys] to business outcomes, was to guarantee the outcome." Digiday 2020-05-26: such deals are roughly 25% of Simulmedia's business. Note: this is a RELATIVE guarantee (beat your other TV), not an absolute sales number.
4. Westwood One ROI guarantee, 2017-10-25. Remedy: "no-cost supplemental media weight" sufficient to deliver the guaranteed ROI. Conditions: qualifying clients; creative pre-tested against audio norms; Nielsen measures. Eric Rhoads (Radio Ink, 2017-10-26) criticised the remedy: "A money-back guarantee would say Westwood is so confident that you cannot lose." (https://radioink.com/2017/10/26/westwood-roi-guarantee-brilliant/)
5. NBCU "Upside", 2019-02-08: first NBCU business-outcome guarantee, tied to ticket sales via Fandango data. Remedy not stated in the MediaPost coverage.
6. LG Ads Solutions, 2022-01-26: advertisers "pay ... only when they meet specified performance goals," including conversion metrics (app installs at launch). CEO Raghu Kodige: "We're turning the tables for advertisers, making performance not just something brands aim for, but something that is actually guaranteed." Validators: MRC-accredited third parties, iSpot named.
7. AMC Networks, 2025: described by The Current (2026-05-19) as first major network to guarantee outcomes in an upfront; no remedy terms in the article. Contradicted as a "first" by items 3 and 5.
8. Also Hallmark Channel "beginning to offer sales guarantees" (O'Grady 2018-02-01). Not independently verified.

Not verified: whether Meredith/MPA/Westwood guarantees survived after 2018 or were ever paid out. I found no post-2018 report either way.

Who is doing what in 2026: Digiday 2026-06-10 quotes WBD's Robert Voltaggio ("I think it's an iterative process over the next couple of years... It will eventually likely be a currency that we can actually transact upon"), Paramount's Leo O'Connor ("We're still transacting on a traditional basis, but we are working against a benchmark conversion target"), AMC's Evan Adlman and TelevisaUnivision's John Kozack (quotes in Area 5). AdExchanger 2026-05-15: TelevisaUnivision's Kozack says outcome guarantees "have potential but are not yet a reality."

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5. Counter-evidence (things that weaken the argument)

5a. "Nobody put money at risk on a sale" is false as history

Section 4 above. A reader with trade memory (Meredith, MPA, Simulmedia, Westwood One) will remember them.

5b. The retrofit test: "we have always sold outcomes"

Partly true, mostly in a different form:

• Contingent pricing (pay only on result) is old and lives in direct response, affiliate and search. Dated anchors I could verify: PC Flowers & Gifts (William Tobin) affiliate program on Prodigy, 1989 (patent filed 1996-01-22, issued 2000-10-31); CDNow BuyWeb, 1994-11; Amazon Associates, 1996-07; LinkShare and BeFree 1996; Commission Junction and ClickBank 1998 (https://en.wikipedia.org/wiki/Affiliate_marketing ; https://track360.io/blog/affiliate-marketing-history-timeline-1994-2026 ; secondary sources, dates not primary-checked). GoTo pay-per-click Feb 1998. Google CPC 2002. Google CPA test 2006-06-21. CPA networks and ValueClick's 2003 purchase of Commission Junction (track360, secondary).
• Direct-response television: first filmed half-hour infomercial for a commercial product, Vitamix, 1949, WOR-TV (Wikipedia "Infomercial", secondary; not checked to primary). Alvin Eicoff founded his agency in 1959 and pioneered late-night direct response TV; his "...or your money back" book is 1982 (Wikipedia; secondary). Lester Wunderman named "direct marketing" in a 1967 MIT speech (Wikipedia).
• Per-inquiry (PI): I could NOT source a dated origin. Wikipedia's "Cost per action" says only that radio and TV stations "sometimes offer unsold inventory on a cost per action basis, but this form of advertising is most often referred to as 'per inquiry.'" A modern PI vendor (Target + Response) describes it as: "Marketers pay for their radio advertising based on the number of sales leads (or inquiries) that are generated, regardless of the number of times the ad airs." My searches of trade archives did not return a first instance. Treat "PI dates to the 1950s" as unverified.
• Risk transfer differs by form. PI/CPA/affiliate: the publisher carries the whole media risk, and (Battelle, 2006) "For Publishers: Risk increased significantly — they became responsible for merchant website performance, landing page quality, and conversion optimization, factors beyond their control." It also shifts fraud risk to the platform (Google's stated attraction of CPA in 2006 per Battelle: reduced click-fraud exposure). Audience guarantee: seller carries a delivery risk only, prepaid, remedied in inventory. Sales/ROI guarantee: seller carries outcome risk on a prepaid buy, remedied in inventory or cash.
• So "the industry has repeatedly sold on outcomes" is true for the performance corner, and the fair reading is that outcome pricing and brand-media guarantees evolved on separate tracks. The gap your data shows (8 of 2,213 guarantees, all upstream) sits on the brand-media track.

5c. Structural reasons the guarantee stops at delivery (with quotable people)

• Control. Charlie Warner (media consultant, 2011-08-09, on Meredith): "Think of the logic of placing the responsibility for results on an advertising agency. What a marketer, in essence, is admitting in this case is that the two most important elements in the sale of a product or service are the placement and creation of advertising. They are not giving any weight to the quality of the product, the packaging, pricing, the distribution channel, consumer or trade promotions, publicity, social networking strategy, the weather, the economy, or the cumulative effect of advertising messages, to name just a few factors that impact sales." (https://shellypalmer.com/2011/08/behind-the-mask-of-merediths-guaranteed-sales-is-a-discount/ ; also MediaVillage)
• Same piece, on the bar being too low: "Meredith is smart enough to know that sales of national advertisers' products in the beauty, household goods, over-the-counter drugs, and food categories, even in a slow-growing economy, are going to increase by some amount, and probably aren't going to drop. So, Meredith is taking virtually no risk by guaranteeing a sales increase." And on the buyer's side: "if I'm an advertiser, I don't want to turn over responsibility and accountability for increasing sales of my product or service to an advertising agency or to the media; it's my responsibility to increase sales."
• Control again, 2026: John Kozack, TelevisaUnivision president of U.S. advertising sales and marketing: "The thing we have to remember when we guarantee on outcomes: We can only control so much." (Digiday, Tim Peterson, 2026-06-10.)
• Market readiness, 2026: Evan Adlman, EVP commercial sales and revenue operations, AMC Global Media: "For the majority if not all categories, the market is not ready for outcome-based transactions as we define it traditionally in digital." (same). Note the tension: The Current (2026-05-19) says AMC guaranteed outcomes in 2025.
• Measurement independence: Drew Kane, CPO, Mediaocean: "Outcomes [within TV are] not necessarily what you have control over. You can have control over the eyeballs that see something." Samantha Rose, EVP, Horizon Media: "The challenge [and] why this probably has had a lot of stops and starts is the media owner can't measure it themselves." (The Current, Chris Brooklier, 2026-05-19, https://www.thecurrent.com/streaming-tv-spent-decades-selling-reach-results-measurement). The article states "broad agreement" that networks cannot measure their own outcomes; an independent third party must.
• Attribution across the ecosystem: Nick Winfrey, Disney VP of Data and Measurement Sciences (same article): "The identity components [for TV] aren't owned by one single player. The data flows aren't owned by one single player."
• Baselines: Digiday 2020-05-26 and 2021-04-26 — guarantees stalled because 2020 data could not serve as a baseline; "We would be using information that had to be thrown out in 2020"; one network wanted a two-year deal with guarantees only in year two. Dave Morgan (Simulmedia): "The models have to be brand new, based only on data from the last weeks not the last year. For most of the TV industry, everything is a year-over-year look."
• Timeline and standards (Matt O'Grady, Nielsen Catalina Solutions, 2018-02-01): sales measurement is slow relative to always-on digital; digital needs "a universal digital metric" first; legacy multi-year deals lock in low rates; "This industry is slow to change, because there is so much revenue at stake" (as returned by the fetch tool; check wording).
• Incentive to steer: the guarantee attaches to the buy only under conditions that make the miss unlikely (frequency floors, category limits, "larger campaign than the previous year", pre-tested creative). Warner reads that as a discount; Rhoads (Radio Ink) reads Westwood's supplemental-media remedy as not real risk removal.
• Legal exposure: I did NOT find a trade-press source arguing that legal exposure explains the stop. This part of your list is unsupported by what I found.

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6. Area 4: Per-inquiry and performance pricing: summary

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7. What I could not establish (limits)

1. A primary trade-press document from 1967 confirming ABC/American Home Products. The date rests on Ephron's account as reprinted by Ad Age and Westwood One.
2. Who introduced TV audience guarantees under what named competitive pressure. Only the general logic (buyer pays premium for protection) is sourced.
3. Date and author of the Ad Age "How the TV nets got the upfront" page (fetch showed neither). Attribution to Ephron is via Westwood One/Bouvard 2017 and Mediavillage's Ephron 2003 history (whose body text I could not retrieve).
4. When print circulation guarantees began; the NBC 1952 radio guarantee beyond one sentence in the 1956 article.
5. Any origin or first date for per-inquiry advertising.
6. The share of upfront dollars that is guarantee-backed today.
7. Whether the Meredith, MPA and Westwood One guarantees survived after about 2018, were ever paid out, or how much revenue rode on them. No post-2018 coverage found.
8. Remedy terms for NBCU Upside (2019), AMC Networks (2025), Vevo (2026), Duolingo (2026). Coverage silent.
9. A first-in-market fraud-free guarantee from a seller with a dated remedy.
10. Any trade-press argument that legal exposure is why guarantees stop at delivery.
11. Any documented outcome-guarantee that "failed at scale". I found none; instead they stayed small or stalled (Digiday 2020, 2021, 2026). That is not the same as evidence of failure.
12. Primary-source checks on the affiliate, DRTV and Eicoff dates (all via Wikipedia or vendor blogs).
13. Not searched deeply: UK/EU practice; ANA or 4A's formal position papers; Nielsen/MRC standards for TV make-goods; academic work (Lotz 2007, "How to spend $9.3 billion in three days", Media, Culture & Society 29(4), was identified but its text on guarantees was not retrievable).
14. MADDB returned little on these historical and product terms; its useful hits were the 2018 AdExchanger sales-guarantee piece, the 2018 viewability-guarantee pieces, Vevo and Duolingo attention items, the 2021 Olympics make-goods headline and the 2022 ANA takeaways.