I mean the hype around the iPhone was huge. There was obvious need for a phone that "runs OS X" and was part of the already massive iPod ecosystem. It sold itself.

I still don't get the case for a screen you can wear. My phone screen is big enough for most use cases (like posting this comment). If I need to get work done, my laptop is realistically not much larger than the keyboard I'd need to use anyway. The laptop is also cheaper, and I can show what I'm working on to other people without jumping through hoops.

Classic solution in search of a problem.