Just to take the thread on a different tangent, why not go after he likes of limewire, soulseek as they provide a means to access copyrighted material and actually host the users that provide it.
Or even major ISP's like virgin media for not regulating what is posted on their newsgroups, i.e binary files, you can get pretty much anything from there at maximum download speeds. More to the point, the files are actually stored on the newsgroup servers iirc.
I'm not going to defend anybody for piracy, but there's nothing anybody will be able to do ever, they will always find a way round it.