I'm sure the copy protection will be cracked (it always is and has been for iTunes 6 with programs like myFairTunes).
I'd wager that most people aren't interested in using iTunes to pirate media, however. Why pay $15 for a movie or $4 for a rental on iTunes when you can just get the same movie from BitTorrent for free?
That said, the irritating DRM and lack of selection the movie industry forces on vendors is enough to make me want to get my movies off of BitTorrent sometimes! They really need to do a better job of getting consumers what they want so we can purchase/rent movies legally.