When you buy a device that requires proprietary software to run, the money you hand over is an entry fee, nothing more.
gizmodo.com
This is kind of unsettling, because in this day and age, who has the money to keep "renting" things? Not to mention "subscription" prices are bound to go up every once in a while.
Even now, I don't even own the Adobe programs I use, I'm getting them through a subscription, which does have pros and cons: one of the pros is when new versions of these programs are rolled out, it's easy to update them; one of the cons is if you don't stay on top of your subscription, your programs become inoperable (and say your internet connection goes out, there are certain things you got from the internet exclusively you can't use, like fonts and such).