(Games might not even be a thing for them for much longer. Mobile games are the most accessible, and again Microsoft is not in any position to get revenue from that trend. People that buy consoles or $1900 graphics cards are not nearly as numerous.)
I am surprised that more corporate IT departments haven't switched to Linux. They can still supply the same $300 laptops, lock them down to the point of unusability, and everyone can use Word in the cloud. I'd be scared if I were Microsoft, and wouldn't want to make switching away look attractive to anyone. No ad revenue from untargeted ads in an email client could possibly be worth losing Windows as the "default" OS.