The moment an OS maker requires signed apps (on desktop) is the moment I jump ship. Why the parenthetical? What's different about a computer you can hold in yo

The moment an OS maker requires signed apps (on desktop) is the moment I jump ship. Why the parenthetical? What's different about a computer you can hold in your hand that makes it justifiable for the vendor to lock it down and advocate criminal penalties for attempting to run software of your choice? They know it's the death knell for desktop OSes though. "They" have already decided that desktop OSes for the general public are deprecated. Steve Jobs years ago said that PCs are "trucks" that most consumers shouldn't use, and Microsoft has no hesitation about sacrificing Windows 8 usability on desktops in favor of tablets. Even Canonical seems to be headed that way with Unity.