Apple today announced financial results for its third fiscal quarter of 2026, which corresponds to the second calendar quarter of the year. For the quarter, Apple posted revenue of $109.4 billion and net quarterly profit of $29.8 billion, or $2.02 per diluted share, compared to revenue of $94.0...
www.macrumors.com
If you look at that sales graph and the huge spikes in iPhone sales every year when the new model comes out you can see why they do it. You can also see that its very much associated with iPhones and watches (hard to see how much comes from iPads because that's sitting on top of the spiky watch line) - Macs and services not so much.
If they moved to releasing iPhones every 2-3 years, would those peaks spread out into more consistent all-year-round sales, or would they just disappear? That would be a "courageous" experiment for Apple to try but I suspect that the "best" result you could hope for would simply be that total sales wouldn't go down.
I still suspect its largely driven by people on contracts - it's pretty important for Apple sales that
whenever your 12/18/24 month contract is up for renewal there's a newer phone available to tempt you to upgrade...