Looking outside of the gaming space their recent acquisitions seem to have gone fine, no? For example Github seems to go well, Linkedin was always pretty shit and unethical, so I'm not sure it's any better or worse. Citus seems to still be going well and still offers on-prem or enterprise versions on other clouds than Azure. Xamarin is more open-sourced since Microsoft took over.
IMO, (and if you told me I'd say this 10 years ago I'd say you're crazy) of the big tech companies right now I think MS might be the best steward.