Is the Apple app store there to provide that kind of perpetual access?
A book's perpetual existence is mostly because a physical copy exists, that's not really the same, nor is anyone assuring it still exists.
I do sympathize with the issue about requiring updates and etc, I ran into that with Google recently, but I'm not sure I buy into this idea that requiring updates shouldn't happen ever because "my game is like art and art doesn't require updates".