The US and the EU both agree that Google's ad tech dominance must end and call for a breakup; Margrethe Vestager hailed “close and fruitful” work with the DOJ
European Union and US antitrust regulators may have gone their separate ways of late.
Context & Ripple Effects
This story sits at the hinge of a decade-long transatlantic campaign against Google's ad tech stack. Back in 2019, US enforcers quietly divided the target: an agreement between the FTC and DOJ to split oversight of Google and Amazon placed Google squarely under the DOJ's watch, setting up the single-agency focus that produced today's joint front with Brussels.
What makes the Vestager-DOJ alignment notable is sequencing: the DOJ later moved from monopoly findings to weighing structural fixes like a forced breakup or mandated data sharing [[a:872910]], while the EU followed with a €2.95B ad tech fine carrying its own preliminary divestiture stance [[a:889883]]. Two regulators that once worked separately are now converging on the same remedy — unwinding the ad tech business rather than fining behavior.
First-order effects
- Google now faces coordinated breakup demands on two fronts at once: the DOJ's ad tech case heading toward a court decision on dissolution [[a:892848]], and the EU signaling divestment as its preferred outcome — raising the odds one remedy lands before Google can arbitrage between jurisdictions.
Second-order effects
- Publishers and advertisers gain negotiating leverage regardless of legal outcome: the credible prospect of a broken-up stack lets buyers demand better revenue shares and interoperability from Google's ad products in the interim.
Third-order effects
- If the pattern holds, ad tech becomes the template for how Western regulators police platform gatekeepers — structural separations over fines, enforced through explicit cross-border cooperation rather than parallel unilateral action.
The trend: Antitrust enforcement against platform gatekeeper leverage is shifting from fines toward structural separation, with US and EU regulators coordinating remedies rather than merely sharing rhetoric.