Maybe they don't want to deal with how shitty a graphical desktop environment is on Linux. I've largely given up on Linux with the exception of the terminal because of this. There are just too many graphical quirks and glitches.

I know that Linux is merely a kernel but I wonder how things would have played out if the kernel contained some form of graphical environment. There are so many competing environments that you have massive choice but also nothing that really works well either.