Google’s ad tech business remains untouched after regulators decided against a forced breakup. For publishers and independent ad tech companies, though, the main problems-opaque auctions, limited interoperability, and restricted access-are still on the table.
Publishers may be relieved to avoid the disruption of a split, but the bigger question is whether anything will actually change in how they sell digital ads. That depends on whether Google will have to open up its data and tools to competitors, or if the company’s advantages will simply be rebranded under new compliance rules. According to Reuters, the U.S. court declined to make Google sell its AdX exchange or publisher ad server, instead opting for behavioral restrictions rather than breaking up its ad tech stack.
Publishers pay Google a 20% fee to sell ads in auctions that occur instantly when a page loads, a key detail of the AdX business model.
- Reuters Legal
Industry insiders aren’t surprised. Mac Sawa, CEO of OnAudience, says breaking up Google’s programmatic ecosystem was always unlikely, both legally and operationally. Still, Sawa argues that a more competitive ad market is urgently needed, since publishers have little leverage when dealing with dominant platforms.
Transparency over structure
The focus now shifts from breaking up Google’s stack to changing its behavior. Ann Tarasewicz, CEO of Axis, says transparency and interoperability matter more than headlines about a breakup. Unless Google’s rivals get real access to auction data and platform features, publishers will remain stuck in a system where one company sets the rules and keeps score. As detailed in a Reuters transcript of the court proceedings, the next phase is about how Google must change its conduct to address its monopoly in online advertising.
Vitor Bellote, VP Publishers EMEA & LATAM at Seedtag, says publishers need clearer rules on auction visibility and data sharing to truly understand how their inventory moves through the supply chain. Without this, they can’t tell where value is created or if they’re competing fairly.
Behavioral remedies could have more impact than a forced breakup-if they actually change how Google interacts with the market. But if the new rules are weak, hard to enforce, or leave Google’s main advantages untouched, publishers may see little difference.
The court's decision followed an earlier finding that Google held illegal monopolies in segments of the online advertising market. However, the full list of behavioral remedies was initially sealed for further editing, with a redacted version and final judgment expected to be released later.
- Reuters, News Agency
Access defines competition
The industry is now waiting for details. What data will Google have to share? What platform features will competitors be able to use? Sawa says that if divestiture is off the table, the behavioral changes need to be meaningful, especially around data sharing and access across Google’s ad businesses.
Bellote sees this as a shared responsibility, arguing that an open, fair marketplace is crucial for the long-term health of digital advertising. But there’s a risk that the remedies will look strong on paper while leaving the real market dynamics unchanged. If access is limited or enforcement is weak, publishers and independent ad tech firms may see little benefit.
Tarasewicz puts it simply: the industry will be watching to see if the remedies are strong enough to change market behavior. The real test is whether publishers finally get the transparency and choice they’ve been asking for.
The open web shrinks as stakes rise
There’s another challenge: the open web is shrinking. Ian Maxwell, CEO of Converge, points out that even if Google is required to buy on other exchanges-a move that could help publishers and competitors-these changes may only matter in the open web, which is losing ground to walled gardens and closed platforms.
Even with more competition among ad tech providers, publishers are still in a tough market. More options only help if the open web remains a viable business. As reported earlier, platform changes can quickly reshape how publishers make money, forcing them to adapt.
For publishers, the next phase is less about dramatic structural change and more about whether new rules actually improve how digital ads are sold. If competitors get real access to data and tools, publishers might finally have leverage to demand better terms and more transparent auctions. If not, the result could be a regulatory anticlimax-lots of activity, but little real change.
Avoiding a breakup may have spared the industry some short-term chaos, but the real test is whether Google is forced to compete on fair terms. Anything less is just window dressing, and publishers are running out of patience for fixes that don’t address the real power imbalance.
Google’s ad tech division is a major part of its global business, generating tens of billions in annual revenue and powering most programmatic advertising on the open web. Its dominance in ad serving and exchange infrastructure has made it a key gatekeeper for publishers trying to monetize digital content. Regulatory scrutiny has grown as Google’s share of the digital ad market has stayed above 25 percent worldwide, with its ad platforms serving millions of publishers and advertisers in every major region.
