>While few companies announce this publicly, I know from personal experience with corporate clients

Well I have even more personal experience that contradicts yours, and this isn't true at all. Everyone uses Claude / Gemini / OpenAI. Mistral isn't even on the table.

Come on, compared to Google Workspace / Microsoft's whatever-it's-called-these-days, the cost of switching from one LLM provider to another is pretty much zero.

Having an option at the back of your mind is all it takes right now, until push comes to shove of course.