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Apple has been making similar margins on all of its products for the past 10 years. How can you say it isn't sustainable?
10 years ago Apple had 5 billion in revenue. Now they're pushing 100 billion in revenue. They butting in on competitors who operate in the 5% margin range, and who are all desperately starting to claw back at Apple's gains. No, it isn't sustainable. History will prove me out, and in 3 years I would bet that Apple has seen a significant margin haircut. Quote me on a 50% decline. As a comparison, by the way, look at So…
Anyway, Apple has always had a disproportionate share of any market it seriously participated in — the big difference is that 10 years ago Apple was a very small part of a single market. Some fluctuations will probably happen over the next half a decade, but you can bet that Apple will remain absurdly profitable in a way that embarrasses most of its competitors. It's just something that Apple is good at.