That said, this came too late for investors in the dot-com boom. AI investors may find themselves in a similar situation.
Without smartphone, cellular networks etc you’d be miles off. Nobody had this in their thesis so they were plain wrong.
But let's say you invested in the NASDAQ at it's peak during the bubble - late 2010s you're whole, inflation adjusted. Obviously, not ideal, but a decade and a half isn't the worst turnaround to make your money back if you just sit. Lots of trades that have gone far, far, far worse.
Smartphones overtook regular cell phones ~2013-2014 as the majority of owned cell phones in the US.
But the NASDAQ started on clear trajectory up and up since 08, several years before smartphones became big.
Smartphones accelerated it, but obviously the internet was going to keep growing and growing and everyone could see where it was heading well before smartphones. A huge amount of the value generated by the internet is on the business side. The amount of productivity from making it basically frictionless to collaborate from anywhere in the world is hard to understate.