A big selling point to Windows phone was the ability to have contact with Xbox live all the time. So for Xbox live users, windows phones seemed the way to go, until a Microsoft spokesperson said this to Forbes:
"While the Xbox Live experiences and games always work best on the Windows platform, we understand that some Xbox fans may be using other types of devices. To satisfy that need, we are working to extend a few of our Xbox experiences and titles to other platforms."
So, Microsoft is looking to expand to other platforms, meaning iOS, and Android. Soon Android fans can expect to be playing some Xbox live games on your android device. This is a very interesting and smart business decision by Microsoft trying to extend their ecosystem into other platforms.