I think I know why Apple will continue to SUPPORT phones and MAKE one. And I'm sort of suprised no one has brought this up.
Remember back to iPhoto? Apple listed all these compatible cameras, but there were few rumors about Apple developing a camera. Have we seen one yet?
This iPhone sh*t is exactly the same thing. Apple creates an iApp so that you can transfer files back and forth to and from certain phones. I'm sure that the list will continue to grow. But I don't think you will see Apple developing a phone, much less, a camera.
Plain and simple: Apple didn't make a camera for iPhoto, and they won't make a phone for iSync. Period.