Thanks for the link.

This is kind of surprising to me, that Microsoft would license PlayReady for a non-Microsoft platform, in this case Matchstick. I wonder if their policy was always that way, but it just didn't happen, or if it changed?

Microsoft wants its DRM to be supported on all platforms, otherwise it would irrelevant on mobile. PlayReady is available on Android, iOS, smart TVs, and set-top boxes (which most likely run Linux instead of Windows CE these days :)

http://www.microsoft.com/playready/features/