It's pretty obvious to me that this LLM business won't be economically feasible until it can actually produce better code than a team of humans could without it. The reason programmers are paid so highly is because their work is incredibly productive and valuable. One programmer can enable and improve the work of many hundreds of other people. Cost cutting on the programmer isn't worth it because it'll create greater losses in other places. Hence the high salaries. Every saving you make on the programmer is magnified a hundred times in losses elsewhere.
given that LLMs are going to produce code that is essentially an average of the code it has been trained on, which is all human code of varying quality, I don't see how the current methods are going to actually produce better code than humans do when working with their own domain-specific knowledge.