Except it's not impossible. Look at iphone and increasingly android. The device is locked down so hard that even the user doesn't have root access. Gaining root

Except it's not impossible. Look at iphone and increasingly android. The device is locked down so hard that even the user doesn't have root access. Gaining root can be seen as a negative, borderline criminal thing and you lose warranty and repair service from the manufacturer. You also lose the ability to use some apps (Android pay, snapchat, etc.) just because you have root access. The only ones with true root access are Apple and Samsung/Google.