I think crypto currency is a very big opportunity for all of us, both to invest and transact between countries and crypto currencies, not to make people lose their economies, instead they will increase their economies, because no one can predict falling market prices or rising market prices.
I agree that the crypto-currency brings many positive factors, but it is unlikely to replace the economy completely. something that will remain in its usual form, and that something will change. but that only time will show. But then what kind of future is the blockage - it's a fact