My final paragraph addresses this issue: there's an easy-to-use, unalterable reset switch (either software or hardware) that will restore the device to factory settings, and a clause in the service agreement that says tech support will not help you if you refuse to remove your device from geek mode.
Non-app store apps getting popular hasn't been a problem on other mobile devices.
Non-app store apps getting popular hasn't been a problem on other mobile devices.