> it only works until it runs out of fools.

And given the world will never run out of fools, you're actually saying cryptocurrencies will continue working forever?

I've seen people in real life still pushing for crypto. Believe it or not they already got burned a couple of times, but somehow they think that with the next crypto they'll be at the top of the pyramid chain and able to cash out. They don't understand crypto currencies technically, nor that they are always going to be at the bottom of the pyramid no matter how many times they are burned.

Some of these people with the moral integrity of "quick buck at everyone else's expense" maybe won't stop until they go bankrupt or severly in debt. Might be a self-selective environment at this point.