As someone who has spent years building software on top of compiled android binaries, as in, adding features to apps with nothing more than the APK (no source code), I can say that what they are building is not only difficult but quite fragile. I have the benefit of customers who agree to certain OS versions and specific app versions. MS wants it to work universally with every app. It&#x27;s possible to get it close enough that getting any single app to work is a few tweaks, but very hard to get it to the last mile, where every app &quot;just works&quot;.