> Switching LLM providers as a company is not, once all your employees have it integrated with GitHub, their IDE, etc.

I'm not so sure about this. I guess it depends on how well people did their job there.

Ideally, whatever people built is loosely coupled to that third-party resource, meaning that switching cost will stay low.

After all, it's probably just prompts + an API layer. Unless one micro-optimizes their prompts for claude (which then breaks once a new checkpoint drops, hence is a bad idea regardless), pointing them towards a different API endpoint should be doable.