Because it's expensive, and kagi still doesn't have one? And the browser is very incomplete? This is all pretty basic, how many global Web indices do you think exist?
I agree for the index, much less for the browser. I'm using Orion since a few months and beside some occasiona bugs I wouldn't ask anything more. If it was open source it would be perfect.
On the index side I agree, I think they are using other people indexes so far, I don't know if they are thinking about building one themselves.
Same for LLM, but I think that there the problem is even worse.