The real issue that many anti-piracy advocates, including the film/music industry, fail to grasp is that piracy cannot be stopped. You can keep erecting tissue paper barricades to try and stop that train from barrelling along or you can accept the fact that no legislation or punishment is going to end piracy and try and find an alternative solution (a few of which already exist). Even if they magically managed to put a stop to digital piracy you'd still have people running down to their local China towns to grab illegal copies of movies. It doesn't matter if it's wrong, people are always going to try and obtain something for free and doesn't matter how many Pirate Bays they shut down.
The best thing they could do is, as I've already said, develop something like Steam. Create a simple, fast and affordable way for people to obtain digital copies of movies so they won't want to go to the trouble of looking for a pirated copy.
Hell, they already have the framework in place through companies like Netflix but Hollywood is trying to drive them out of business. Why? Netflix provides people a legal way of watching a huge catalogue of films and TV shows. Who is going to go searching for a torrent and wondering if it's loaded with spyware or viruses when they can just fire up Netflix and instantly watch a movie?
I leave you with this:
http://theoatmeal.com/comics/game_of_thrones