UK's competition watchdog says it is investigating Google's proposals to remove third-party cookies from Chrome over concerns it could curb rival advertising
(Reuters) - UK's competition watchdog said on Friday it has launched an investigation into Google's proposals to remove third-party cookies …
Context & Ripple Effects
The UK inquiry begins a regulatory track that later led Google to bring UK competition and privacy regulators into Privacy Sandbox development, rather than develop the cookie replacement unilaterally. The CMA subsequently accepted the phase-out plan with continuing oversight, making this investigation the opening constraint on Chrome’s redesign.
The concern is not simply the removal of a tracking mechanism, but whether Google’s replacement would alter the competitive terms for rival ad-tech providers that rely on Chrome’s access layer.
First-order effects
- Google faces UK competition scrutiny over the design and rollout of Chrome’s third-party-cookie replacement, while rival advertising businesses gain a formal channel to raise competitive-harm concerns.
- Chrome’s cookie phase-out becomes subject to a competition assessment alongside its stated privacy rationale, increasing the importance of how Google specifies the replacement tools.
Second-order effects
- Google’s later commitment to involve both competition and privacy regulators signals that product-development governance, not just the final policy, becomes part of the response to the inquiry.
- The DOJ’s parallel outreach to ad executives over whether the ban would hobble smaller rivals broadens the issue from a UK browser-policy dispute into a wider test of ad-tech competition.
Third-order effects
- If regulators continue to condition privacy changes on competitive safeguards, dominant access-layer platforms will face more scrutiny over whether their replacement standards preserve viable routes for independent intermediaries.
- Browser privacy architecture is becoming a competition-policy arena: control over the technical substitute for legacy tracking can matter as much as the decision to remove it.
The trend: Privacy-driven changes to major platform access layers are increasingly being reviewed as market-structure decisions, not solely as product or data-protection choices.