The building era of crypto railways.

I think crypto has more in common with the railway building era, esp in Britain. Lots of promises unfulfilled, lots of money made... and lost. But, funnily, the biggest crash came at the end, once all the networks had been built. coz.... they'd built over-capacity! lmao. What was then expensive hitech had become a mere commodity. The lesson there is, IMO, what do your coins actually do? What will they do in 5 years time?