Well, if they celebrate, I would say it will leave a bad taste in their mouth
Sure enough, they will be going after public sites which are their feasible targets. Their trouble is the 'hidden' private sites which provides everything you want. As an example, most programs are available about 8-12 hours after release, movies and music are often available even before they come to your shop so they are in reality making small scores by barking up the wrong tree.
This has always been a cat and mouse game and I've been here since the beginning watching them fail over and over. It has always been one down ten up.
It started by swapping cracked software in the form of physical diskettes and tapes, went on to BBS, FTP, NNTP (news servers), web, torrents and streaming.
Name me one battle they have won? Fact is they only sunk an ever so tiny amount of the ships in the pirate ocean for each of the technologies.
So let's take a sober approach based on history, and in that respect the winner has always been the pirates