: Actually, RT (including 8.1) *does* allow doing the same thing as Android. The ability to sideload apps, without getting them from the store or going through Microsoft approval, is well documented and has been known for over a year...
PowerShell (as Admin) > Show-WindowsDeveloperLicenseRegistation > enter credentials > install .APPX all you want.
Android does not (without significant work) let you run "desktop" Linux apps (well, graphical ones) as it lacks an X11 server. WRT does at least have the desktop mode... With that said, I agree that MS is screwing up by the numbers here. They are wasting engineering time (design, dev, test, maintenance) that could be better spent on actual features, they are pissing off users, and they are crippling their own product. I don't expect them to *help* us, but they could at least stop wasting their time breaking things!