Ultimately, the retention of talent will be Apple’s Achilles’ heel.

The smartest people will always want to be working on the smartest thing. Sometimes that comes together in one amazing project. iOS has been that project for this decade.

If there’s a problem for Apple it’s that they’ve already invented the future. It’s a done deal. The best and brightest engineers and product managers may move on to other ventures. Less likely to succeed, of course, but that’s less of an issue for them given the rainfall of AAPL gains. We’ll have to see what happens.