FTC's Amazon Lawsuit: A Wake-Up Call for Advertisers

The Federal Trade Commission's recent legal action against Amazon has sparked considerable discussion among Chief Marketing Officers (CMOs) and advertising professionals. The core of the complaint alleges that the e-commerce giant manipulated its advertising auction systems, potentially inflating ad prices through undisclosed mechanisms. This development serves as a stark reminder to advertisers of the inherent challenges within closed digital ecosystems, often dubbed "walled gardens."
FTC's Allegations Against Amazon's Ad Auctions
On September 2, 2026, the Federal Trade Commission, supported by 22 states, initiated a lawsuit against Amazon. The lawsuit asserts that Amazon covertly utilized a "soft reserve" in its ad auctions since late 2018, essentially inserting artificial bids to drive up the final cost for advertisers. This alleged practice, the FTC claims, could have extracted over $20 billion from unsuspecting advertisers. Historically, second-price auctions, where advertisers pay slightly more than the second-highest bid, have been favored for allowing brands to set competitive maximums without necessarily paying the full amount. However, if the FTC's allegations prove true, Amazon's actions would undermine this transparency.
Amazon, in its official response, labeled the lawsuit as "misguided" and its claims "patently false." The company maintains that its ad ranking algorithm prioritizes ad relevance over bid amount, suggesting that its system often selects lower-bidding, more relevant ads. Amazon further states that it transparently communicates its pricing and auction mechanics through its advertising help pages. The company estimated that its relevancy-first approach saved advertisers more than $8 billion between 2021 and 2025, with approximately 92% of selected Sponsored Products ads in 2024 not being the highest bids.
In light of these serious accusations, marketing insiders are urging CMOs to take proactive steps. Nick Manning, founder of Encyclomedia, highlighted that this incident underscores the power imbalance within "walled gardens," where platforms control crucial data. He emphasized the necessity for advertisers to verify their expenditures on Amazon's ad products during the period in question. Ruben Schreurs, CEO of Ebiquity, recommended that clients remain composed but diligently seek formal confirmation from Amazon regarding the unaffected status of their ad spending. Such documentation could be vital for any future claims. Alan Chapell, a privacy attorney, reinforced the importance of independent measurement and verification of ad efficacy, especially on major platforms like Amazon, to mitigate risks associated with lack of transparency.
This is not an isolated incident; several tech giants have faced scrutiny over their ad systems. Despite these repeated transparency concerns, advertising spending on these platforms continues to grow, primarily due to their extensive reach and sophisticated targeting capabilities. However, experts like Manning insist that CMOs must not lose sight of "price setting." He advised businesses to evaluate whether the costs on platforms like Amazon align with their marketing objectives, even when platform margins are opaque. The focus, he argued, should be on using internal metrics to validate advertising effectiveness. Luke Stillman of Madison and Wall believes that Amazon's ad business will likely endure, as advertisers primarily base their spending on campaign performance and return on investment. He also suggested that any forced changes to Amazon's auction dynamics could lead to a temporary drop in ad prices, potentially benefiting advertisers and, in the long run, encouraging more budget allocation to Amazon if efficiency improves. The lawsuit has also brought to the forefront existing grievances from Amazon sellers, such as the 24-hour boycott orchestrated by Million Dollar Sellers to protest policy changes. Jamie MacEwan of Enders Analysis concluded that if the allegations of systemic manipulation are proven, they would significantly intensify these long-standing tensions.