As long as we depends on any Microsoft technology, the dependency won't go away, thinking the problem is only Windows and Office is throwing to the eyes of the public.

To achieve Microsoft freedom, you have to have 100% Microsoft free technology, from computer, operating systems, programming languages, hosting services, communication platform, social media, job platforms, the whole deal.

You've already conceded the point that once it's contributed to Linux Microsoft can't yank it away again.

If Microsoft wants to stop contributing that's perfectly fine. Others will maintain it.

That's what's great about big open source projects like Linux. It's another great project originating in Europe.