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As Smartphone Industry Sputters, the iPhone Expands Its Dominance
(www.nytimes.com)
This is a most excellent place for technology news and articles.
Aside from maybe the headphone jack, those are all features that enthusiasts want but average consumers don't care about enough to compromise on size, waterproofing or price.
Smartphones depend so much on economies of scale, and a limited pool of cutting edge components, it would be hard to sustain a niche market just for enthusiasts.