Seeking Alpha reports that 25% of AT&T's mobile revenue and 43% of it's stock value comes from it's exclusive deal on the iPhone:
So why does AT&T still treat iPhone customers like an abusive boyfriend? Lying to them (about tethering) stealing their money (double charging for texting) and ditching them whenever they can (spotty service)?
Meanwhile, if you live in New York City, are a cable customer, and thinking about getting an iPhone but don't want to pay AT&T a fortune for lousy service, you just got a new option:
Get yourself and iPod Touch or iPad and some VoIP software and you're in business.