"Try a different smaller form factor every couple of years" is a reasonable strategy. First Mini, then Air. Supposedly they're gonna refresh the Air next year, we'll see. But even if they don't: we're well into the "keep phones 3 years or more" era of the smart phone. You don't need an exact match for every phone for everybody every year.
> "Try a different smaller form factor every couple of years" is a reasonable strategy. First Mini, then Air.
The iPhone air has a 6.5" display. That's bigger than the base iPhone 17 (6.3") and the iPhone 17e (6.1")
You're probably thinking about the thinness of the phone. iPhone air is 2.4mm thinner than iPhone 17, but I don't think anyone is asking for that, as most people use a case which makes the phone thicker.
Yeah, it's smaller in a different way than the mini was small.
But the thinness isn't actually the appeal. The key thing is that it's a lot lighter. (And yes, a case adds weight as well as thickness. But if you start from a lower baseline, you still end up in a lower place.)
But I think you do need some level of consistency to retain customers. Churning models, especially given Apple's otherwise-excellent retention metrics and mechanisms, seems like a self-goal by almost encouraging those buyers to switch after 3 years.
If you bought an iPhone Mini or an Air, but that model is gone at T+3 years, that's a lot more likely to result in you looking to Android, than if you bought an iPhone 13 and want to upgrade to an iPhone 16/17.
My estimate is very much anecdotal as well, but at my office alone there are three iPhone mini users than (used to be four until they switched job), only one AirPods Max user. I think this year I have only seen one other person wearing them. Much harder to see the exact model of phone people use without staring in a bad manner.