Total blockchain industry can arise only in a single universal (global) economic system. In the meantime, the value of cryptography comes down to very useful utilitarian projects based on the principles of control: smart things, transport, accounting, and so on. I did not mention the speculation popular in the blockchain industry today. It is impossible to say unequivocally that this is harmful; one can say that this is the inevitable payment of human nature at a certain stage in the development of civilization.