The FTC sued Amazon on August 31 over its ad auction practices, alleging that Amazon has been quietly overcharging advertisers for more than seven years through a hidden "soft reserve price" -- a secret minimum bid that inflates the price of every auction without the buyer knowing. Two days later, Judge Leonie Brinkema handed down her remedies ruling in the DOJ's antitrust case against Google's ad tech business and declined to break the company up. The two rulings landed within 72 hours of each other, and the FTC now has the most expensive precedent in ad tech history sitting right in front of it. Whether the FTC learns anything from it is the question that will decide what Amazon's ad business looks like in 2030.

What the Brinkema ruling actually did

Brinkema found Google liable for illegally monopolizing two markets in the ad tech stack -- the publisher ad server and the ad exchange -- in April 2025. The remedies phase ran through last year. When the ruling landed on September 2, she stopped short of ordering the breakup that the DOJ asked for and that the independent exchange companies (OpenX, PubMatic, Magnite, Index Exchange, Equativ, Kevel) spent two years testifying would be the only real fix. Instead, she imposed behavioral remedies: limits on self-preferencing, a requirement that Google share real-time auction data with publishers, and a Prebid integration that would put rival exchanges on equal footing with Google's AdX. The full text was under seal until September 16, but the headline is that the structural remedy got cut.

That is the part the FTC should be studying, because the Amazon case is built on a different theory but is structurally vulnerable to the same outcome. The FTC is not arguing that Amazon monopolized the ad exchange. It is arguing that Amazon hid a soft floor on auction prices for more than seven years. Proving the harm is the easier half of the case. Designing a remedy that fixes the behavior without breaking the auction system that thousands of advertisers depend on is the half that takes years and can end in a ruling nobody is happy with.

Why the France precedent matters more than the Google one

The 2021 French competition authority ruling against Google is the closer analogue to what the FTC is about to try. France fined Google 220 million euros for self-preferencing in its ad business and imposed behavioral remedies designed to level the playing field and improve interoperability. Arnaud Creput, CEO of Equativ -- one of the exchanges now suing Google for damages -- pointed out the obvious problem: five years later, the market structure has fundamentally not changed. Google remains dominant. Independent ad tech companies still compete inside an ecosystem where Google controls critical infrastructure on both sides of the transaction.

That is the warning the FTC should be writing on a whiteboard. Behavioral remedies address specific practices. They do not eliminate the underlying incentives that created the problem. If the FTC gets a behavioral order against the hidden reserve price, Amazon will comply on paper. The auction will continue to run on Amazon's infrastructure, with Amazon setting the rules, with Amazon controlling what data advertisers can see. The question is not whether Amazon will comply. The question is whether compliance produces measurable change for advertisers. The France answer was no.

What this means for your Amazon Ads budget

If you are a brand spending more than 20 percent of your digital budget on Amazon Ads, the next 18 months are a good time to start asking hard questions about what you are actually paying for. The FTC's complaint alleges that the soft reserve price inflated auction clearing prices above what a competitive auction would have produced. If that is true, your CPCs on Amazon have been higher than they should have been for years. You will not get a refund. You can, however, stop assuming the auction is fair and start treating Amazon Ads spend like the closed, opaque media buy it actually is.

For agencies running Amazon Ads for clients, the practical move is to start logging clearing prices against category benchmarks today, so you have a baseline before any remedy lands. If behavioral remedies are imposed and prices do move, you want to be able to show your client the gap. If remedies are imposed and prices do not move, you want to be able to show your client that the ruling did not fix the underlying issue -- which is information the FTC will need when it comes back for round two.

The FTC has a real case against Amazon. The conduct alleged is serious, the duration is long, and the dollar amounts involved are large. The risk is not that the FTC loses. The risk is that the FTC wins the way the DOJ won against Google -- a liability finding that gets celebrated in the press, followed by a remedies ruling that does not change how the market actually works. The Brinkema decision just made that outcome more likely, not less. The ad tech industry should be paying attention.

Sources

AdExchanger, What The FTC Can Learn From Google's Ad Tech Case As It Pursues Amazon, September 14 2026. AdExchanger, The FTC's Amazon Lawsuit Is Ad Tech's History Of Opacity Repeating Itself, September 2026. AdExchanger, Google Won't Have To Break Up Its Ad Tech Business, Judge Brinkema Rules, September 2 2026. French Autorite de la concurrence decision 21-D-11, June 2021.