Jolla, Blackberry, and Tizen (did that one ever get shipped?) have Android runtime ports that can run many Android apps really well. Not surprising because the apps are touching the same bits they touch in &quot;real&quot; Android. But that hasn&#x27;t made a lot of difference to the popularity of those OSs. App users who <i>want</i> Android apps are unlikely to <i>want</i> an OS other than Android. Windows probably had the strongest case for using Android compatibility effectively. I can think of plausible cases where a customer <i>needs</i> to use Windows but <i>wants</i> Android apps.<p>Here is my prediction for what comes next: Microdroid, an OS that, like Fire OS, is based on AOSP, but uses the Microsoft ecosystem. That will happen because the ecosystem and apps are more important than the OS.