* Outside of the HN crowd, I don't think the average consumer thinks of privacy as a differentiator.
* I don't know if competing on general search is the way in. I think you need a wedge, and these new companies competing on a certain vertical (like search tools for developers). I see promise here, with specialized LLMs in the backend.
* The biggest search engine in the world comes as the default option on the most popular browser and the most popular phone operating system. Even if your results are 10x better, that's a huge hurdle to overcome.