The thing is that linux has a ever growing user base, 2.8 market share is nothing to sneeze at.
its still higher than windows 8 and just behind macOS.
Windows 10 is actually bleeding marketshare as windows 7 has become revived in its popularity.
Its because of the privacy concerns of windows 10 and i suspect its only going to get worse once windows 7 loses support
And how much of that 2.8 percent is running on hardware that is, by computing standards, antique? That is a very important question to which I do not have the answer. I would suspect, however, that it's well less than half of that. The computing power needed to do a lot of the things that people now generally want to do doesn't exist on 20 to 30 year old hardware.
I don't care how "revived in its popularity" Windows 7 is, or may become, when Microsoft drops support for it the fat lady has sung. Businesses, in particular, are not going to jettison decades of investment in Windows based PCs, software, and institutional memory to jump to something else. Just ain't gonna happen.
Others will (and have, obviously) disagree but my own research leads to my firm conviction that most of the "concerns" regarding privacy and Windows 10 are grossly overblown. Even ignoring third-party tools, just using the "No"/"Off" option on all privacy settings and setting telemetry to "basic" takes you to a level of data exchange with Microsoft that is entirely consistent with what I could track in Windows 7.
People also seem to be conveniently ignoring that telemetry, which seems to be the big bugaboo of those who want to make it one, has been put in Windows 7 and Windows 8/8.1 retroactively. Oddly enough, there's been no furor that I can find regarding that.
It also makes no business sense for Microsoft, or any other major software maker, to engage in business practices that would open them up to litigation, and their own legal departments check over what these feature introductions mean in terms of legal exposure. Microsoft is not going to do anything that would knock it out of major market segments, and particularly health care settings, in the United States or elsewhere. If Windows 10 can be used in HIPAA-compliant settings, and it can, the claims of "spying" just don't hold up, at least for me. I've had my machines as "locked down" as one can get them using the built-in settings and the amount of data that is going to Microsoft is, in my opinion, minimal. It certainly does not suggest that they're "mining my machine for personal information."