No engineering company worth their weight is going to build a world class technology business purely with generative AI in its current state. The risk in doing so currently is total and utter failure. I have a very hard time believing we're any where near that capability. Maybe your mom and pop startup could hire a prompt engineer to build a website and simple tool but we have yet to see those exercises surfaced to the mainstream; it's purely speculative.
I say, rest easy programmers. Your careers will be enriched more than axed with generative AI as a support tool for many years to come.
Also, if anyone who works in this field has a strong opposing belief, then consider OpenAI engineers are programming themselves out of a job which obviously is not the case.