The dotcom era bubble specifically refers to Webvan-era companies, which were almost universally over-funded and over-valued based on outrageous speculation about the potential of the internet.

Instacart was founded about a decade later, and its margins are pretty slim by tech company standards (net income ~$100m on $2.5bn revenue) so I think it's pretty clear that in the year 2000, there's no possible way that Webvan could have succeeded even if it had done everything right.

Extrapolate this logic to AI, and the parallel is clear: The current generation of AI over-promises and under-delivers at enormous cost, and yet billions are invested under the premise that quality will go up and costs will go down enough in the next few years to build viable businesses.

If those investors are correct and we're just a few years away from useful, cost-effective AI, they'll make their money back. If they're wrong and we're actually a decade away, not a single AI product that hits the market within the next few years will survive.