If this Wired article makes you feel excessively optimistic, also see Five Ways to Look at Apple’s Surprise Bad News | The Atlantic
"Given a long enough horizon, Apple may see a financial benefit from less frequent upgrades as well. An iPhone that lasts longer keeps customers in the iOS ecosystem longer. That becomes even more important as the company places greater emphasis not on hardware but on services like Apple Music. It also offers an important point of differentiation from Android, whose fragmented ecosystem means even flagship devices rarely continue to be fully supported beyond two years.The Silver Lining in Apple’s Very Bad iPhone News | Wired
“In reality, the big picture is still very good for Apple,” Maldonado says. Compared with Android, “Apple’s in a better spot, because the phones last longer.”
That’s cold comfort today and doesn’t help a whit with China. But news that people are holding onto their iPhones longer should be taken for what it really is: A sign of progress and a win for everyone. Even Apple."