It's not luck. I think there's a massive hunt on the internet for P2P transfers of movies and TV shows, something much more effective than previous efforts on the music front. And the video people in power didn't get their feathers ruffled about this until fairly recently, with the exploding popularity of bittorrents and broadband. (Movies were naturally protected previously by their sheer size, and lack of reliability and speed of previous downloading technologies with large files.)
I already told you my ex got a letter from her ISP regarding the sharing of a movie. That was
V for Vendetta. After that, I stopped using P2P altogether to acquire movies, although I continued to use bittorrent for other things occasionally. Then I was bitten by the
Heroes bug, and downloaded the first 5 episodes. A few weeks later, another letter from the ISP, about sharing
Heroes, copyrighted material.
It is clear to me that in order to continue using any transfer technology which involves sharing anything on your system, new anonymizing steps need to be implemented. Think about this, and how easy it is for someone like us, who knows exactly how the game works, to spy on the popular torrents, and pass IP addresses along to their bosses in Hollywood, or wherever. When you participate in a bittorrent, you can see the IPs of everyone who is contributing to what you're getting. No big leap here to see that, so can they! It doesn't matter what encryption tech you may be using. At some point, the IP has to be resolved, or you don't get your data packets. Only some sort of 2-way proxy would insulate you, not peer-to-peer encryption.
Picture me as one of these evil witch hunters. What would I do? I would constantly visit pages like torrentspy and isohunt. I would look at the more popular torrents, and cross-ref them with my list of content to protect. I would then
join any offending torrents with my fancy client software, and print out all the IP addresses participating. I would compile that list in a neat form, and forward it to my evil bosses. Job done, and very well too.