Blocking sites because they're "not on the service plan" is likely to be much more acceptable in western countries than explicit censorship, as in Iran or China. It's authoritarianism dressed up as commercialism. In the post-Wikileaks era my bet is that governments will either encourage, or at least not do anything to hinder, the erection of walled gardens which make it more difficult for the average internet user to get access to unauthorised sources of content. The next decade could see a return to the Compuserve-like internet services which existed in the 1990s.