Spain, France from this month on, Germany, Sweden (go to the pirate bay and read the letters they received from content producers, they're hilarious) and pretty much all european countries. That is changing, though, because companies are very powerful and there's a lot of money involved.
Anyway, new ways to get the content for free will be found. After all, in Europe downloading "illegal" contents is not really considered illegal by law, but just a civil offense and nobody can go past your data protection rights and figure out your identity behind an IP on the grounds of a civil offense. That's been ruled like that in Spain several times and also the European Union. Besides what Americans think, we still have some respect for personal freedom.
All they can do UK, France and soon Italy, is to order the desconnection of a particular IP from the internet, without knowing who is behind it. They do that know in France after three downloads (if they catch you, which is not so easy because of course it is against the law to monitor your communications and they have to basically get into the download networks and record your IP). There won't be further prosecution on the grounds of a civil offense.