Wall Street's AI fears slash Google value by $500bn

Google’s search business sits at the center of Alphabet’s revenue story, and AI-generated summaries are now part of that product. A disclosure that those summaries were affecting ad revenue landed against a market already watching how generative AI changes search. Alphabet’s stock then fell to a six-month low, showing how quickly investors are re-rating the company when its core business model looks exposed.

For advertisers and publishers that depend on Google search traffic, a shift in how search results are presented can change where users click and where ads appear. For product teams at Google, AI answers now have to coexist with the business that funded the company’s search dominance for years. Competitors building AI chatbots also gain a clearer opening to argue that search can be rebuilt around a different interface.

The fight here is not only between Google and rival chatbots, but between a new answer-first search experience and the old ad-supported search page. If AI summaries reduce the value of clicks, the economics of search advertising become harder to predict for the whole sector. That tension matters for any company trying to graft generative AI onto a mature platform without undermining the revenue that made it successful.

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The total crypto market fell 2.0% in the 4 hours after the first headline, after falling 2.1% in the 2 hours before.

47 prices, one every 30 minutes · The move was larger before the first headline than after: an observation, not an explanation. The market also moves on things nobody publishes.