I vaguely remember watching a video that held that a huge factor in the dot-com crash was a revelation that the build-out of broadband (last-mile fiber-optic in particular) was going to be way slower than initially thought, which left a ton of nascent services dead in the water.

It feels like that was something companies were still feeling the sting of through the early 2010s. So many services and platforms that launched and, whoops, there still aren't enough Americans with fast-enough internet to support them. And then echoes of it in sectors like VR.

The thing is, it wasn't just that all of these companies were making stupid miscalculations. They seemed to have been earnestly following forecasts for adoption, only to have the other companies that controlled how much of the public was going to be able to access those resources in the following month, year, 3 years, etc., slow-walk their roll-outs for their own strategic benefit.

It makes me feel a little better that I can almost never afford to be an early-adopter for these things anyway, but it's frustrating as a consumer to see how long it takes for them to finally hit the market in a robust way (and eventually become cheap enough for mass consumption).