If a client asked you last month whether the Google ruling changes their programmatic buy, the honest answer was no. It still is. Nothing in your accounts moves this quarter, and probably not next quarter either.
That doesn’t make the ruling irrelevant. It makes it slow. And the agencies that use the wait well will be in a better spot than the ones who file it under “legal stuff” and move on.
Here’s what happened, what it actually changes, and what we’d do about it now.
What the court ordered
In early September, Judge Leonie Brinkema issued her remedies decision in the Justice Department’s ad tech case against Google. The court had already found in April 2025 that Google ran an illegal monopoly in open-web display ad tech and tied its publisher ad server (DFP) to its exchange (AdX). This was the part where the court decided what to do about it.
The headline: Google keeps AdX. The DOJ wanted the exchange sold. The judge said no, citing the time an appeal would take and the disruption a forced sale would cause for the small publishers and businesses that run on Google’s tools.
Instead, she ordered Google to change how the pipes work:
- AdX has to play with Prebid. Google must build integrations so the open-source header bidding framework can pull real-time bids from AdX.
- The DFP–AdX tie gets cut. AdX has to send bids to rival publisher ad servers on the same terms DFP gets them.
- Google has to explain its auction. That means published documentation on how DFP picks a winner, plus bid data shared with publishers, including wins and losses.
- A monitor watches for six years. A court-appointed technical monitor, paid by Google, gets access to its people, systems and code. The DOJ asked for 15 years.
- It applies globally, not just in the U.S.
Why your campaigns don’t feel it yet
Three reasons.
First, the clock hasn’t started. As of mid-October, the final judgment still hasn’t been entered. The two sides filed competing versions on October 2. The DOJ wants AdX opened to rival ad servers and Prebid within six months. Google wants twelve. The remedies take effect 60 days after the judge signs, and the court expects the full package to be running within about 15 months.
Second, Google is appealing. It has already told a New York court it plans to challenge the Virginia decision, and it’s asking to pause the private ad tech lawsuits there in the meantime. Appeals take time. Plan as if the real changes land in 2027 at the earliest.
Third, this is a publisher-side fix. The remedies target the sell side: the ad server, the exchange, how auctions get run. Google’s buying tool for agencies, DV360, isn’t covered, because the court found the government didn’t tie it closely enough to the conduct. Streaming TV, in-app and retail media are outside the case too.
What will change, eventually
Here’s the number that matters. The court’s findings put AdX’s take rate at around 20%. The next-largest exchange charged about 6%. AdX also handled somewhere between 63% and 71% of open-web display transactions worldwide from 2018 to 2022.
That gap is the whole story. When one exchange can charge three times what its nearest competitor does and still win most of the volume, the auction isn’t really an auction. More competition for publisher inventory should squeeze that fee over time. Some of that savings shows up as better yield for publishers. Some of it, if your partner is paying attention, shows up as more working media for your clients.
Both sides also agreed Google should retire Unified Pricing Rules for indirect demand. That’s the setting that let publishers apply one floor across all bidders, and it shapes the prices buyers see. When it goes, floors on Google-served inventory will shift. Someone on your buy needs to notice.
Our take
It took the government more than three years and a 106-page remedies opinion to force Google to show its work. You don’t need a federal judge to get the same thing from your programmatic partner. You can ask tomorrow.
We’ve been saying this for a while. The fees and auction math that inflate programmatic costs mostly live in places nobody on the client side is looking. An ADVERTISINGWEEK article by Kym Insana further explains it: “The Tricky Math That (Still) Leads to Programmatic Overpayments.” The ruling doesn’t fix that for you. It just proves the problem was real, at the biggest scale in the market.
And here’s the part that should bother agencies most: the court decided a six-year monitor was needed to keep an eye on one company’s auction. Who’s watching yours?
Three questions to ask your programmatic partner this month
You don’t have to wait for the appeal. Put these in your next partner check-in.
- What do you charge, and what does the DSP charge? Ask for both numbers, separately. If you can’t get a straight answer on fees, you won’t get one on anything else.
- Which DSPs do you buy through, and why those? You’re looking for a reason, not a default. A partner who uses only one platform has nothing to compare it to.
- What can’t you see, and what are you doing about it? Nobody sees the whole supply chain, no matter what the pitch deck says. A good partner tells you where their view stops and how they push for more. If the answer is “we see everything,” be skeptical.
If your partner answers all three without flinching, good. Keep them. If they get vague, you’ve learned what the court spent years establishing about Google: opacity is usually where the margin lives.
AlwaysOn Digital runs programmatic, paid social, paid search, and traditional media for brands and agencies. Want a second set of eyes on your campaigns? Talk to us.
