The iPhone was not the first mobile device or even the first smartphone. Not to mention it did not support mobile applications as we know them today.
The iPhone killer UX + App store release can be directly traced to the growth in tech in the subsequent years its release.
We might have been possibly better of actually, with the Apple walled garden abominations and user device lockdowns not being dragged into the mainstream.
Not clear that this is a helpful interpretation, other than "we're in the primordial ooze stage and the thing that matters will be something none of the current players have", but that's hard to take to the bank :-)