Apple is a sharp outfit. The virus, spyware, crapware situation on Windows is so bad many people welcome Apple's apparently benevolent dictatorship with open arms. So what you can only install from their app store? You can install from there and your risk of malware is limited. The app meets at least some standards enforced by Apple. The patented methods would be used to protect Apple customers from thieves, a genuinely useful benefit.
Never mind that an app store with standards for quality and taste could exist without it being enforced. It could be just as good business, buy this brand and you never get crapware. That is worth money.
The thing is people are so sick of the battleground which is Windows software they are willing to trade freedom for safety. Perhaps they are enough afraid of thieves to want their computers watched over with the power to remotely disable them.