My prediction, that my IT department hates to hear, is that Windows is going away.
Microsoft doesn't want to be Microsoft anymore; it wants to be Oracle and IBM and primarily make money off of business consulting and the cloud.
I think Windows will eventually become a presentation and slowly-phased-out compatibility layer on top of Linux, similar to the way macOS became Unix, but even less different than its underlying OS.
However, it should be noted that I'm not very good at predicting things.
Microsoft doesn't want to be Microsoft anymore; it wants to be Oracle and IBM and primarily make money off of business consulting and the cloud.
I think Windows will eventually become a presentation and slowly-phased-out compatibility layer on top of Linux, similar to the way macOS became Unix, but even less different than its underlying OS.
However, it should be noted that I'm not very good at predicting things.