This is gonna be one hell of a mess
First of all I'd be very happy to see an unlocked iPhone. See, the current hacking solution kills the warranty. What happens to all the hacked iPhones, when the battery starts fading. Could you still send it to Apple for battery replacement (given you voided warranty)?
Second I think that there are so many cons regarding the one-carrier tie, that I don't mind the pros.
Third, and that being the most drastic part, all involved companies really play hard. It was Apple's mistake to think they could change the mobile handset industry. Being an Apple shareholder, this makes me happy. Being a consumer, I'm very angry. What, if the real big players in the mobile industry start that kind of behaviour and use the same stupid arguments. HDSPA is just taking off, and honestly, in less than five years iPhone will be reminiscent of a Stone Age internet communicator (it won't be remembered as a phone, as Apple touts us that it ain't a phone).
Imagine you have to change carriers, every time a new handset pleases you. This really is a worst case scenario.
Television on your mobile handset is just around the corner, and I'm not talking YouTube-stuff, I mean real television. Maybe we will see a first glimpse next year. I guess there are some people working on live mobile handset streams of the Beijing Olympic games.
Video conference calls will be all around, as soon as the mobile data networks pick up more speed. There already are mobile handsets, that utilize this technology.
Don't get me wrong. Apple did quite an impressing job with the iPhone (though I still have my gripes with it and won't get one). But the answer from the big players is just around the corner. I mean, seriously, have you taken a look at the N82 from Nokia. If not, you may also want to check out the LG KS20 (though I will never get a LG phone again, I hate my Chocolate!). And imagining those two companies follwing the 'We tie to one carrier' policy would be a real pain for the consumer.