Oh, riiiight, i must have missed the part where it said the suit had been brought by a bunch of Europeans who've been paying AT&T for two years for a phone they couldn't use in the hopes that in year three they could unlock their phones and finally use them in their home countries.
If you are going to be a smart-a** you should at least pay attention to the article. This is an AMERICAN lawsuit talking about what the company should and shouldn't be allowed to do in AMERICA. If it were a British lawsuit or a Japanese lawsuit or even a Canadian lawsuit then the other carriers might matter, but its not. What practical expectation can they have of the American courts? To unlock my iPhone 3G so I can use the Edge network on T-Mobile? Gimme a break!
Did it ever occur to you that Americans who travel or work outside of the States might want to use their unlocked GSM phones on international GSM networks by switching SIM cards? If someone who has fulfilled their contract with AT&T wants to travel to Europe and use their iPhone over there, they can't because Apple stupidly refuses to unlock a phone they've fully paid for. Your line of thinking is extremely small and limited. As I said, there's a whole world outside of AT&T and T-Mobile.
And just because you have no desire to use T-Mobile's EDGE network doesn't mean that others feel the same way. They have another carrier that is an option, but Apple & AT&T won't allow customers to use that option, despite the fact that their contracts have already been fulfilled.