What gets me is that you keep asserting this (the latest with "they would just have to switch carriers" as if that's no big deal. As if they weren't in a contract.
AT&T customers had to deal with contracts as well.
Obviously whatever their reasons for NOT buying an iPhone before it was on their carrier was stronger than they reason to switch.
Again - technically you are correct. Just as it is technically correct that anyone in the world (GSM accessible) could have already bought an unlocked iPhone - but for some reason you want to dismiss that because it would involve traveling to a different country to buy it? I'd call that a decent obstacle. Just like switching carriers is a decent obstacle.
The problem with your assertion is that it's not based in the real world. "Just having to switch carriers" is obviously not a real world scenario for enough people that they didn't. Yet - when the iPhone WAS available on their carrier of choice - BAM! Sales. Not a shocker at all.
Sure, but I was addressing a specific argument - that the number of customers in the market doubled in the US. It did not. The iPhone was made more attractive to more customers in that market by supporting their carrier of choice.