UWP is a platform that makes it easier to port and make games on PC and Xbox one with little to no coding. It still has issues like all new things. So if we think about it, Microsoft increase their install base significantly and became more relevant than ever. That is my two cents at least. Also, Microsoft stated in one of their leak documents supposedly that they believe anything that is running windows 10 is an xbox as well that is why you're about to get the xbox one interface on PC soon.







