This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
It’s because for Microsoft a user using Windows for free is better than a user using some other OS.
At least when the user uses Windows for free they still tell everyone at work and home that you have to run Windows because there’s just nothing else out there.
I doubt that is a reason most people switch. But I suppose it is a valid concern for Microsoft