Problem is the other operators will do the same thing soon and then you don't really have a choice.
What I hate the most is the hypocrisy of companies like these. They were advertising apps (like skype) and free unlimited Internet access and smartphones just about until last year and were overexcited when "everyone" wanted to switch to a smartphone since that meant extra money for them in terms of new subscriptions (for buying a new phone) and of course different data plans and such. But now they have to be greedy and are trying to go back to limited data plans (which I kind of understand), but now this. I personally don't think this is the right way to go and it'll be hard to make it work. They'll "block" skype and viber, but then some other apps will pop up and then they'll block them and so on until what?
Skype is making money off of a "free" product, so is Viber, why can't the operators be as smart? I mean we still pay for the Internet access.