On September 16, 2026, Judge Leonie Brinkema of the Eastern District of Virginia unsealed a 106-page remedies opinion in the Department of Justice's ad-tech monopolization case against Google — one of the most closely watched antitrust rulings of the year, and a template every other regulator chasing Big Tech is now studying.
The breakup that didn't happen
The government had asked the court to force Google to divest its ad exchange, AdX. Brinkema declined, calling structural relief "neither realistic nor needed." That's a meaningful departure from the more aggressive structural remedies some antitrust advocates had hoped for — and it shapes how the rest of the ruling reads: as a bet that behavioral fixes can restore competition without dismantling the business.
What she ordered instead
The behavioral remedies are specific and technical, which is exactly the point — they're designed to be enforceable:
- Publisher choice preserved. Publishers using Google's ad server (DFP) can route demand through rival ad exchanges, not just AdX.
- Equal-terms bidding. AdX must bid into competing publisher ad servers on the same terms it gets on DFP — removing the home-turf advantage.
- Forced interoperability. Both AdX and DFP must connect to Prebid, the open-source header-bidding framework that rival ad tech companies rely on.
- Data access. Publishers get access to real-time bid data — information previously visible mainly to Google itself.
- Six years of oversight. A monitor and technical committee will supervise compliance — notably Google's proposed term, not the 15 years the government had requested.
The tell in that last detail
The gap between the government's 15-year ask and the six-year term the court actually adopted is worth sitting with. It suggests the remedy, while real, is closer to what Google itself proposed than what prosecutors wanted — a meaningfully different outcome than a case where the court sides with the government's preferred remedy structure.
Why this ruling matters beyond Google
This is the most significant live remedies decision in Big Tech antitrust enforcement right now, and regulators elsewhere — the EU under DMA, India's CCI, and other jurisdictions pursuing their own ad-tech investigations — will study exactly how far behavioral remedies can go before a court decides structural separation is warranted instead. For publishers and rival ad-tech vendors, the Prebid interoperability requirement and real-time bid-data access are the concrete, immediately actionable parts of the ruling — worth understanding in detail regardless of how the six-year monitoring period eventually plays out.
Sources: CCIA · The Hill · Progress Chamber · Digital Content Next