LLMs are an obvious threat to web search, and guaranteed Google is already seeing their effects. What they have done is given people an alternative to interact

LLMs are an obvious threat to web search, and guaranteed Google is already seeing their effects. What they have done is given people an alternative to interacting with human knowledge via Google search. It was falling in quality before, but in the general case no one had an alternative (and so it would still generate the same revenues). But ChatGPT is not only a substitute but a superior product, so people actually move to it instead of kvetching about the decline.