If you say you're doing research for a novel, should it consider that plausible? How much does it need to know about its users to vet them?

I think part of the answer is that AI chat doesn't need to be general-purpose. It turned out that people really liked using a chat UI that seems to be general purpose, but you don't need to make answering any question a user asks your business. You don't need to provide therapy if you're not in the therapy business. It should be possible to specialize.

But in order for that to work, a company needs to explain to its customers what business it's in.