[masswerk]

You are right. I can't see this for consumer devices. Also it would do major damage to app-stores, so there is no broader interest in it. And no one would release and maintain an OS dedicated to power users only (there are to few) – it just doesn't scale.

Apple had once an approach to this in the old Classic OS, by a switch that would enable or disable some access and features in the OS (esp. Finder). While this wasn't a great success on the desktop (like any other easy-suites), it might be worth to rethink for the mobile platform.