Pretty much every one in tech at my company has switched from a Windows OS to Linux or Mac in the last year. Almost no one who knows that there is a working alternative is choosing to use Windows in their personal life.
I switched after 30+years on Windows/DOS. I got my mom to switch, one (or two) of my brothers have switched, my little niece's first computer is running Linux. In the span of a year, my family went from 100% windows machines to about 70%. Hell I got my friend in another state to switch to linux, and he's really running with it. Microsoft has a lot of momentum, they can endure these losses by relying on their business platform, but unless they commit to making a clean, light, privacy-focused, secure and stable OS, we will probably see the last Windows in the next decade.