The torrent sites should be stopped too, and I not mean just thepiratebay. Everyone see the million viewers of xvideos and xhamster, or even of filesonic's and oron's from Alexa and advertising networks who sell impressions there. But there's increasing million people using torrent you can't measure or track as its p2p, and even if ISPs to try filter out torrent traffic per government request, there's slower speed solution that would be adopted if fast traffic is filtered out, such as freenet or else:
http://en.wikipedia.org/wiki/Anonymous_P2P
Don't forget if you go in a street market in places such as Kiev you find for sale DVD's with site rips of anything from met-art to hustler, for a dollar, and anyone can put these in filesharing the same day all the sites are shut down, reaching quickly USA, Australia and west europe where credit card owners live.
So with many busts we can go back 2009 each time, but never 1999... at the time people was paying well for shareware, I was into doing utilities put for $20 for sale and selling so many - there was not yet free opensource software for do everything - it happened the same for software, just it is legal those kids made free-everything softwares.
Even cam shows (only the models who wish, not all) are free now, and that's live, so no more 1999 for cams too. Still people like to pay for "something", find what they pay for and give up if you sell what they no more pay for, easy as 1-2-3.