(Not that I agree with the "lock down everything" approach tech companies are taking, that is.)
With all the positive sides of the App Store, this is really dangerous in terms of freedom.
Perhaps the current one is fine. What about the one after that?
What about the 'Bitcoin' that launches in 20 years? Do we have any mass market free platforms left then?
Workstations may always exist - servers may always exist - but right now, the masses have general purpose computers on their desks, in their messenger bags. I want that to last.
Some bitcoin users even smashed their iPhones in protest: http://www.wired.com/2014/02/watch-working-iphones/
Of course, this kind of thing is why we will always have some form of generic, user-managed-hardware market. If you take away the tools used to create the apps and services controlled by the gatekeepers, you won't have any apps and services. To put it another way, Apple doesn't want to be responsible for creating the millions of apps in their store, they just want to be the ones in control of those apps. The workstation is not going away.