Whether or not a specialized solution could do it better or cheaper, it might not matter if the generalized solution does it well enough. A sufficiently powerful generalized solution can erase entire product categories and industries. Think of how many different devices and services were replaced by a single device we now all carry around in our pocket. Some industries just need to pivot slightly, others need to pivot hard, but it’s really hard to predict ahead of time.

The question isn't whether a generalist chatbot is needed. The question is whether a generalist chatbot is the easiest and cheapest way to go. And so far, looks to be the case.