I agree with most of this analysis, and it is why, even though iOS/OSX/etc offer great stability, are esthetically pleasing, and well-designed, I won't go the Apple way (I have been using Linux for over a decade now).

Zittrain, among others have written about this as well:

"As tethered appliances and applications eclipse the PC, the very nature of the Internet — its 'generativity', or innovative character — is at risk"

http://futureoftheinternet.org/