I think we are in total agreement, jjj.
The iPhone isn't particularly good at anything it does, you say it yourself. But the combination of features and form factor make it a great product, in spite of the fact that it's not particularly good at anything. It is *good* *enough*.
Analyzing the success of a product is a bit like analyzing the success of a piece of music. We can apply all kinds of statistics, musical theory, etc to Beethovens 5th symphony. We might find that he did this and that, and speculate what contemparies felt when they heard it. We might even construct a "Mozart generator" that generates music that resemble Mozart.
The original iPhone did something different from competing phones at the time. It was a big commercial and cultural success. Now, repeating that success is hard (either for Apple or Samsung).
If anyone are interested in _my_ speculations, I'd dare to say that the combination of a working touch interface, a UI experience that made people happy (to such a degree that they could never stop fondling it), availability of apps and media, and a nice physical design were key factors at the time. Add to this that the Apple name had a certain aura or status, and that they seem to excel at clever marketing.
The bad judgement by Nokia & friends was that they judged the iPhone on established phone quality metrics (sound quality, radio quality, camera quality,...), aspects that the iPhone may not have been particulary good at. Being a disruptive product, it was able to compete in a different arena than the established players, something that seems necessary in order to shake up an established product cathegory.
How can this be related to cameras? Perhaps that Sony or Samsung at some stage may hit the lucky formula that obliberate Canon and Nikon that seem contempt at refining stuff. Or they may not. Oh, and the winning factor of a successful $500 - $1000 camera may not be DR at base ISO or MTF50 or some other techie spec. I sure don't know what the magic part will be but I sure hope it is something more imaginative than a crude facebook integration.
-h