The rewards system is actually a really good idea with a lot of logic behind it. Instead of Apple having to host the files with such a large amount of transfers, let the users buy the rights, and then get them from other users.
I'd personally love to be able to use an Apple BitTorrent client on my favorite torrent trackers as well, but I find that to be very unlikely. Why would Apple release software when Apple programs are so easy to just download instead of pay for, especially on the BitTorrent networks?
Daniel.