I do know that MS is really pushing developers to embrace their UWP strategy (Unified Windows Platform), but I don't see how a AAA game on new consoles and computers will work on a phone without having extreme graphical differences.
If a AAA game comes on mobile devices with extreme graphical differences, so be it. My priority the last two years or so, especially after discovering how sucky Steam is and just how convenient mobile gaming is, has shifted into games for those portable devices (and no, not Candy Crush clones or having tons of games with IAPs filled to the brim, with the exception of Jetpack Joyride mostly).
But as far as I know, you don't have to utilize all platforms to make usage of UWP. You can use two platforms and ignore the others. Still, it would be so darn GREAT if there were more AAA-level games on mobile, with or without sacrificing graphics (gamers need to know that graphics are useless without substance, and that the job of graphics is to allow you to see the game and its tone, not to just be pretty for the sake of prettiness).
Which brings me somewhere else. I've read it here many times, that the long-run competitor to Steam would be the Windows Store given how Windows 10 is received more positively than Windows 8. Will Microsoft take the plunge, and sell game keys to stores, like how the current Steam handles things?