What I would have never guessed in a million years would be, say, Radioshack killing RIMM. Apple? I wouldn't have said the emphatic "NO!" you seem to be expecting. And that's my point: not that Apple can't be dethroned, but that Chinese products — not being synonym to quality — can do it. Not in five years, anyway.
While running Android I don't think anyone can achieve the hardware/software integration that Apple has right now — which grants it its quality advantage —, except for Google itself. Either than that, Apple would have to, say, sell two or three yearly lines of exploding phones in order for it to lose its grasp on the high-end market.
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Hardwarewise, you are right: Apple is not Ferrari (although it comes close, like Samsung does as well). Hardware-software-integrationwise? Here Apple reigns supreme, unchallenged, since everyone else (either than Google) is running someone else's OS. Yup, they sure are. I see China nowadays as Japan was in the 1970s: fast paced, locked and loaded, having put a big fat target on the USAs back. They sure disrupted American markets in the 80s — especially in the automotive industry. Yes, I can see Apple suffering the same heat. The difference is that they may have learned from that particular piece of History, and, of course, they have a few bucks to their name that could make a difference.