Crypto is just another manifestation of insider trading (which is clearly the whole basis of the stock exchange), no?
Rich people invest a small proportion of their wealth in it, promote it to encourage regular/poor people to invest a far more sizeable proportion of their wealth in it.
Then when it reaches a kind of terminal upward velocity, the rich collude to sell their stake simultaneously at the highest possible value, the markets collapse, and the regular/poor have handily gifted their limited wealth to the rich.