I say momentum.
What new products has apple come out with post-jobs?
(I think apple pay and airtags aren't compelling, and arm is not a product)
Jobs said not to chase money anyway.
AppleTV+ subscription based series, many of which have been extraordinarily well received, for another example.
For comparison the original (wired) earplugs were popular, but not at the level of being a massive business. Apple had to kill the 3.5 jack ("courage") and turn the proprietary integration knob to 11 to have the airpods fly off the shelves.
Is AppleTV+ turning profits ?
Wow, I had the reverse course where I jumped off the iPhone train mainly because airPods were doing nothing for me compared to the competition (mainly Shokz), and I also wanted the 3.5 jack (and NFC as a bonus).
I still get that people can enjoy their airPod as a good product, but don't see it as massively better than Bose or Sony's product for instance if set in a vacuum, which makes the difference in market size extremely artificial to my eyes.