> What happens when your entire day is depended on saas models?

Grab a different one, unlike GitHub being down, there's far less of a moat and you can swap out Codex for Claude Code pretty easily. Or any other provider and yes including local models, though it depends on how good the ones you can run locally are.

> Do we even understand the code anymore to manually fix anything?

Assuming you are not 100% vibe coding, you should! If you are vibe coding, then you should still be able to read the code and understand it regardless. Same with making any changes, it's just code. Whether it's worth your time to do that and work manually or not, that's a different question.

If I was limited to just one cloud provider, I'd just take a few hours off and have a beverage or take a nap. Or if working in office, find other busywork.