The problem is that without adblockers the web is basically useless due to too many publishers becoming too greedy and torturing their users with sometimes dozens of layer,banner,popup,popunder and scareware ads on one(!) page.
Do you see how that is in perfect connection with the reason people pirate stuff?
Anti-piracy main reasoning is that if it's too expensive(too many ads in your case) just don't buy it. The 2nd main reason is lack of availability(in ad blocker case - lack of sites with less ads that give you same content).
