The similarity with Nintendo is striking, and has become increasingly so. Nintendo, in the years between the Super Nintendo and the Wii, had among the smallest market shares in the games industry, but has nearly always been - by quite a distance - the most profitable. All the while, its rivals slugged it out over meaningless 'market share' at the expense of their profit margins. (Nintendo's platform is also the most closed, and like Apple's, the most simple and user-friendly. Funny, that.)
In any case, while Apple appears content with the low-volume, fat-profit strategy for now, I'd argue it won't be long before they start expanding the range, iPod-style, to hit all segments of the market. Given how world + dog wants an iPhone but can't afford/isn't prepared to fork out for one at current pricing, I'd wager we've only seen a hint of Apple's future dominance of the mobile industry.