I gotta disagree here. Apple has never, ever listened to what their customers "really" wanted. There have been massive protests for a two button mouse, for a tower Mac (something less expensive than the utterly ridiculous Mac Pro), for better or more flexible hardware in general (going back years). The Apple Remote Control has a grand total of 6 buttons on it (used to be just 5), what consumer would have ever asked for that?

No, Steve Jobs has put the focus for Apple onto a relatively small stable of devices designed in a very particular manner. The iPhone is popular not because it is the epitome of what every customer wants; unlike other devices that try to satisfy as many expectations of as many consumers as possible, the iPhone instead tries to be the perfect extension of the Apple philosophy into the world of the cellphone. As with many other Apple products, it succeeds not by doing more things, but by doing a few things very well.