I was wondering the same thing - I just had an interaction with Amazon's chatbot (which is showing LLM-level ability), and realized that my side of the interaction could also have been performed by a chatbot. I went looking to see if anyone had made one yet, and found this thread.

Now that there are more accessible LLMs in play, I imagine it won't be long until these startups start cropping up.

Right now several people are using LLMs as utilities for their workflows. I don't think many startups would have grown enough to get on your radar... it's been such a short while since we got this far.