Except not really, because the installed base of Macs at the time was a few million, while the iPhone installed base is around a billion. Being Mac-only in the early 2000s was orders of magnitude more limiting to potential sales than being iPhone-only today.
The iPhone install base is certainly not a billion, there have only been 1.2 billion ever sold. Estimates for the install base vary wildly, with the upper estimates at about 3/4 of a billion and more reasonable estimates at half a billion.
In any case, iPhones have about 15%-25% of the global smartphone install base (with the US being the big outlier). I certainly count that as very limiting. Maybe not on quite the same magnitude as Macs were for early iPods, but Apple Watches so far also did a lot better than early iPods.
> iPhones have about 15%-25% of the global smartphone
> install base
I would like to know how much of the remaining 75%-85% are used as smartphones and not just dumbphones with an smartphone OS on them. I am sure the many of the cheapest models are used this way.
Except not really, because number of Apple Watches sold in first month was in the millions whereas number of iPods sold was less than 100,000! I think OP is talking about rate of growth being like iPod, not absolute numbers https://www.lifewire.com/number-of-ipods-sold-all-time-19995...
