Not sure if that's supposed to be an argument for using/trusting MS.
The levels of user and privacy hostility they went to (and are continuously going to) with Windows 10/11 makes me see this as a strong argument against.
The one thing that used to set Microsoft apart from the likes of Google and Facebook was that their main product, Windows, was not anti-user. No matter what you thought about the OS or Microsoft's business practices, it was a paid piece of software that worked for the user. Windows now is filled with user-hostile features and it works for MS instead. And they don't even grant us the courtesy of giving it away for free.
Market share or the fact that the public at large isn't punishing them for it doesn't mean anything. It was already clear that most people are willing to walk headfirst into a dystopia.
This is why I don't like Google collecting data on me now. Not because I don't trust them now, I for the most part still think them trustworthy, but 15 years is a long time and there's no way I can intelligently trust that they will act in a certain way 15 years from now, given the available information at my disposal.
And that's with a company that I think is heavily incentivized monetarily and has a strong employee culture of keeping data private and in-house. Until there are better laws protecting my data or a clear legal relationship with me and an entity with regards to my data, I think the only prudent course of action is to keep as much information about me as possible out of their and others hands.
In terms of the biggest companies in the sector, MS has been doing much more for developers and developer productivity than others. At the same time it's not a monolith and so you should not expect boyscout behavior either.
Privacy is a concern, and the onus is on you the user to ensure that you remain in control of your data. When using a service (any service), the answer is to always be ready to bail at a moment's notice. That means using source control and not tying yourself to a specific ecosystem.