This proves exactly why I argue with people all the time who think that Android is going to upset the applecart (so to speak). Apple’s hardware and OS are sufficient, but neither is the source of their financial performance. What Apple has done is create a business model around their content-distribution engine and use case. I suspect they could stop making hardware and port everything to an Apple-branded Android platform and still make almost as much money.
You've been listening to that troll extraordinaire, John Dvorak, who predicted a few years ago that Apple would drop the Mac OS and start making Windows machines.
Apple is not a hardware company, a software company, or a content distribution company. It is a user experience company, and its control over the whole widget, as Steve likes to say, is what allows it to maintain that user experience -- and along with it, its cachet and its profits. There is no upside for Apple in tearing that down and getting into the undifferentiated commodity hardware business.