Latest quarterly reports show that iPhone is 61% of Apple's revenue while wearables + home is only 11%.
I kind of doubt wearables + home will keep growing. My Apple Watch is nice and fine, but I kind of doubt I'll ever replace it. My wife pretty much never wears hers. If Apple Watch were a compelling product that felt like it was worth replacing regularly, sure. But I think it's more likely that it already peaked. The category is growing because of the AirPods, not the Apple Watch, and I expect that will peak fairly soon, too.
Services being as large as it is is surprising. How on earth is Apple making $13B/quarter on that? Maybe 1 in 10 people in the world own an Apple product... so that's 700M owners. They're spending an average of $20/quarter on Apple's services? What? Is that the $5/month that Apple charges for cloud backups? That seems like an absolutely insane take-rate...
But then Apple would have nowhere to grow with that, if the take-rate is already so high...