I guess it depends on what we define as niche. I'm thinking for coding type problems as an example smaller less well known languages or frameworks that don't have extensive coverage across multiple websites etc tend not to show up well in AI Chat.
If you can focus the chatbot on a specific docs website with a lens though that problem might go away.
Being able to innovate on the search side while everyone else loses a lot of many training LLMs feels like a good space to be in at the moment.