Both the Motion Picture Association of America (MPAA) and Recording Industry Association of America (RIAA) have asked ISPs to remove web pages offering copyrighted material, and the ISPs have, of course, complied. But the views on how to stop people from sharing infringing material on file-swapping servies are quite a bit different.
MPAA has persistantly requested ISPs to disconnect users sharing copyrighted files, but the ISPs view that they can't be held responsible for the content stored on the personal computers of the subscribers. RIAA, on the other hand, has decided to leave ISPs alone and instead wait for other means of disabling peer-to-peer file-sharing networks. Then again, hampering the operation of peer-to-peer networks is just as illegal as copyright infringement.