The distribution of works shared by file-sharers is disturbing, but not as problematic as “the content that attracts file sharers is the content funded for the purpose of exploiting copyright” makes it sound. Similar content would be produced anyway (sadly, by my minority taste) without copyright, as seen in pre-enforcement cultures contemporary and past. File sharers just share what is popular, and something would be popular no matter what info policy regime existed. But the unpopularity of [semi-]unrestricted works is damning for both “free culture” and “copyright reform” movements, such as they are.
My sentences are typically drolly ill said, but I’ll accept a superior evaluation for those two. :)