This. I think this is why they are pushing UWP and convincing more people to build apps for Windows 10 using it. If this strategy succeeds, they'd have everything in place for a relaunch. It would be so seamless for developers to support Windows 10 Mobile, they'd just do it.
Actually I strongly beleive the Linux subsystem in Windows 10 will be used on The next Windows Surface/Phone to accommodate Android apps and the android market. Then UWP will demonstrate its performance and Graphic API advantage. Hell Microsoft could even import android projects into UWP projects through the flexibility of CLI if they really wanted to.
That's a pretty silly belief. MS failed at running Android apps. They also failed with their attempts to port iOS apps to their platform. In fact, all of those "bridges" have been burnt to the ground.
One more thing, Microsoft will never be able to use the Google Play store unless they make an Android device that passes all of Google's requirements.
Your suspicion is somewhat backwards: the Linux subsystem was built to accommodate Android apps. However, the decisions were made not to, excuse the pun, "Black-bury" the platform by directly supporting Android apps after all.
