Has a critical service that you used meaningfully changed to seemingly integrate non-deterministic "intelligence" in the past 3 years in one of its critical paths? I'd bet good money that the answer to literally everyone is no.
My company uses GenAI a lot in a lot of projects. Would it have some impact if all models suddenly stopped working? Sure. But the oncalls wouldn't even get paged.
My company uses GenAI a lot in a lot of projects. Would it have some impact if all models suddenly stopped working? Sure. But the oncalls wouldn't even get paged.