If a doctor doing tele-surgery on a child over the internet isn't more important than the next season of "13 ways I killed myself" then I don't know what you guys are smokin'.
Up to this point I haven't seen widespread blocking of applications based on data. Maybe based on security, but not data and if AT&T wants to not ding me for Directv content, then so be it. The others can still use the pipes. If I go to T-Mobile I can watch unlimited YouTube.