Most apps worth money have to integrate with existing systems in highly specific ways determined by endless meetings with real people to extract the requirements and probably haven't been done before and are usually all proprietary code ChatGPT doesn't know about and there's not a cobol's chance in hell anyone is going to rewrite it all in a way that's compatible with junk hallucinated by a bot. There's no business case for that. It will probably always be cheaper for humans to maintain what has already accumulated over decades despite the "high" salaries.

The knowledge gap between devs and everyone else, including bots, is a chasm. It seems many don't realize how hard some devs work for so little relatively speaking.