They are revolutionary for use cases where hallucinated / wrong / unreliable output is easy and cheap to detect & fix, and where there's enough training data. That's why it fits programming so well - if you get bad code, you just throw it away, or modify it until it works. That's why it work for generic stock images too - if you get bad image, you modify the prompt, generate another one and see if it's better.

But many jobs are not like that. Imagine an AI nurse giving bad health advice on phone. Somebody might die. Or AI salesman making promises that are against company policy? Company is likely to be held legally liable, and may lose significant money.

Due to legal reasons, my company couldn't enable full LLM generative capabilities on chatbot we use, because we would be legally responsible for anything it generates. Instead, LLM is simply used to determine which of the pre-determined answers may fit the query the best, which it indeed does well when more traditional technologies fail. But that's not revolutionary, just an improvement. I suspect there are many barriers like that, which hinder its usage in many fields, even if it could work most of the time.

So, nearly all use cases I can think of now will still require a human in the loop, simply because of the unreliability. That way it can be a productivity booster, but not a replacement.