Exactly this. It's taken 14 iterations to get the iPhone to where it is. Apple Watch has taken 8 or so. Apple has taking a long time iterating to get to where we are today on this platforms. Baby steps really. Each version introduced things we totally take for granted today. I remember just getting the Retina screen on the iPhone 4 was a massively big deal.

Just think what Vision will be after 10 iterations and a decade of time.