Which is why all big tech companies belong into the same basket, and not be idolatriased only because they happen to contribute to some FOSS project that helps their bottom line, have marketing toys for engineers or whatever.

Contributing to FOSS projects because it helps their bottom line is the reason everybody does it. It's a good reason to do it. That's not the problem.

The problem is when you try to establish barriers to the customer ever switching to a competitor. Microsoft isn't the only company that does that but they are obviously a company that always has and still does do that.