There was a post on here (HN) a while ago about an entire company account getting suspended because Google had linked an employee of that company to his personal google account which was being used to re-sign Android apps for redistribution.

It’s an extreme example, but if that account is true, google definitely have automated tooling to link distinct accounts.

I can’t actually imagine any reason why they wouldn’t. It feels like something they’d need at their scale.

I actually have a few gmail accounts that are "Youtube banned" for same content ID thing but the mail/drive/whatever part of it still works. So the "Google account wide" ban seems pretty rare and more motivated than just 3 copyright strikes.

Thanks for this data point!

That's nonsense. They have banned the entire org in this case, not linked accounts that weren't before.