I run a print shop and we constantly need to snag installers for old software that is no longer supported by the manufacturers. One example RIP program that we use (and paid over $5000 for, mind you) no longer works with the dongle key that came with it.
So we traveled over to the dark side of the software world and snagged a great cracked copy. Works wonders. A year later our install was corrupted and we lost the installer, so I went back and downloaded it again (thanks, MegaUpload!). No issues.
Today, we lost our install again, went back to the forum to grab the link and MegaUpload had nuked it because the copyright owner asked to remove it. Thankfully I found a USB key from a year ago with the installer and we're back in service -- "pirating" software I've already paid $5000 for plus around $3000 for all the annual support subscriptions. The copyright owner, who has little reason to actively attack this old software, still spends time trolling the bootleg forums to specifically find these links.
And that's how it will continue to be -- companies with high cost software definitely troll the many bootleg forums to report to the content sharing hosts and have the ISOs removed. This said software is probably 10 years old (older?), and is sub-par compared to all the modern apps available. Yeah, I should probably get a new license and upgrade, but we're using it on a 12 year old printer that we run maybe twice a month, and it works just fine with the old software I paid for and want to run.
Hopefully, TPB does a better job at UX/UI versus MegaUpload and RapidShare, who have some of the most annoying interfaces imaginable.