Or perhaps we need to be asking ourselves: Why do we demand ever-increasing growth in order to declare that a company—hell, even a product or a segment within a company—is "healthy"?
Smartphones hit a saturation point a while back. At this point the only ways for Apple to grow marketshare are to a) lure away current Android customers, or b) convince first-time smartphone purchasers to go with iPhones at a higher rate.
Neither of those things are trivial, and not being able to do so for a little while should not be taken as an indication that something is wrong.
