A lot of the models we have are about as good as they are going to get. I mean, ChatGPT 5 isn't appreciably better than ChatGPT 4. Hook one of those models or even one not as strong to a purpose-built RAG pipeline and a controller to run as mesh of interconnected prompts and agents, and you'll blow away general purpose chatbots in niche areas in terms of cost, efficiency, and performance.
The question then becomes, to what purpose can you put this super fast, dedicated machine that performs certain small-scopes, simple tasks really well, but also fucks up often enough that you can't depend on it. To what tasks could you set a bot that does stuff with minimal competence let's say 90% of the time, and the other 10%, doesn't create even bigger problems?
That domain exists, but it's thin and narrow.