Per the GP, there's a great deal of evidence that people have a revealed preference for trusting Microsoft, if they're already in the Microsoft ecosystem.
(I don't particularly trust Microsoft, but I'm also not in their ecosystem.)
25 years ago (or even 15 years ago), I would have probably agreed. But I don't think that's true anymore; to my understanding, students in public schools are equally as likely to use Chromebooks as they are to use Windows or Mac machines.
Yes, the point was that the "you don't have a choice but to use Windows" market is smaller than ever, meaning that the slice of the pie that's "I want to use Windows or don't care what I use" is larger.
(I don't particularly trust Microsoft, but I'm also not in their ecosystem.)