The old Android 2.3 phone I gave to my daughter to trash can still install apps from the same source as her tablet running Android 5.0. Sure, only a small subset of them but still. There is no equivalent single installation source for Maemo, MeeGo and now Sailfish, only fragmentation. With a big red sign saying, "Hands off, geeks only!" No wonder it was a flop. Elop did not cause it, he merely recognized it.