I'm not so sure. iPhone users have a distinctive "feel" that distinguishes them from other smartphone users. This translates into different behavior, differen

I'm not so sure. iPhone users have a distinctive "feel" that distinguishes them from other smartphone users. This translates into different behavior, different responses to stimulus. For instance, they tend to be music lovers, more-so than, say, Nokia purchasers. This translates into high-bandwidth usage, and iTunes sales probably isn't shared with carriers. They're interested in accessories that achieve sonic fidelity, something that carriers are notoriously bad at. So they get legit in-ear stuff instead of buying carrier's bluetooth crap. And Safari is--well--usable, in a way that many (but not all) mobile browsers are not. The awesome layout engine and sweet UI mean that you are likely to actually use it while waiting in line or whatever, where on many other phones the usability cost is so high that you'd rather be bored for 120 seconds waiting to check out of the grocery lane. And of course, the aggregate cost of millions of people waiting in checkout lines is a force to be reckoned with. This is coming from a guy who loves his iPhone, so feel free to cast my unwavering praise in a negative light. But the thesis--that iPhone users have distinct behavior that tends to oppose the aims of carriers--is a valid one.