CNet's The Digital Home article on 6/10/08
"Now that Apple and AT&T have squeaked out of the deal, what's holding the two companies together? Certainly some would say that it's that oft-mentioned exclusivity agreement the companies signed, but I don't know of one person who actually read the thing and no one really knows if Apple can get out or not.
But if I had to take a guess, step one in getting out of its contract with AT&T revolved around the revenue sharing deal. And before you know it, Steve Jobs' latest blockbuster may be on other carriers..."