This is misguided. Maintenance of LLM code has a far greater cost than generating it.
> They prefer a future where computer programs are purchased by the token from model providers to one where they might have to unintentionally help out a competitor.
I don't think that's even a thought. The thought is that "no one can tell me no".
In corporate reality they don't care. They have their product, requirement. As it starts to rot it's easier to rebuild than to maintain.
If you can ask for an LLM with a skeleton crew team now they can do it all again in five years time with the next level of LLMs.