I don't think Google would want the PR hit for doing such things. I suspect that they even have hang-ups about training their general-purpose AIs on your private data, because they might accidentally leak some of it. A lot of their business exists because people trust them to keep your data safe (even from their internal teams), and they would lose a lot of business if anyone discovered otherwise.

I think it will be a wild couple of years but there are lots of things that are off-limits.