Chatgpt is effectively a functional search engine for a lot of people. Searching for the answer "how do i braid my daughter's hair?", or, "how do i bake a cake for a birthday party?" can be resolved via tradtitional search and finding a video or blog post, or simply read the result from an LLM. LLM has a lot more functionality overall, but ChatGPT and it's competitors are absolutely an existential threat to Google, as (in my opinion) it's a superior service because it just gives you the best answer, rather than feeding you into whatever 10 blog services that utilize google ads the most this month. Right now ChatGPT doesn't even serve up ads, which is great. I'm almost certain they're selling my info though, as specific one-off stuff I ask ChatGPT about, ends up as ads in Meta social medias the next day.