Hardware is also turning into a subscription-like model. You can't upgrade a component on your iPhone or Android without needing to purchase a new phone. With Macbooks, you can no longer update the hard drive, battery, and RAM. You must purchase a new Macbook. Remember the recent story about BMW charging for heated seats in South Korea, another hardware as a subscription idea.
I read that Apple is considering a subscription model for iPhone devices. That will formalize what is already implicit.