Oijl, you have to understand, this site is teetering on the legality scale, and giving you a link to an illegal download is just the kind of thing that could sink this project with a C&D letter. We can't help you get an illegal copy. I'm sorry, but you'll have to ask someone else.
Even without the risk of C&Ds, this site could still be shutdown for having links to illegal software.
Thy keep the rights in case they wish to profit from it in the future, and to prevent others from profiting at their expense. It's also a way to safeguard their reputation, since they don't allow others to make what might be of inferior quality and tarnish their reputation.
Well that's the logical explantion. My cynical explanation is that companies like to horde their copyrights, no matter how insignificant these copyrights have become.