Cameyo by Google streams legacy Windows or Linux apps to the Chrome browser on a ChromeOS device or to a progressive web app.
I've seen many a Windows-themed Linux distribution come and go. I've also seen my fair share of Windows-like Linux ...
That's not to say you're totally locked out of installing stuff, however. You can install things using the rpm-ostree command ...
If you're moving on from Windows, this compact powerhouse from Minix delivers more than enough performance with the right OS.