I don't think so, cryptocurrency and fiat money have their respective advantages and disadvantages, on the one hand cryptocurrency is better than fiat money but on the other side fiat money is better than bitcoin. For example if we want to buy daily necessities fiat money is a good choice, but if we want to do digital transactions in bulk, bitcoin is the right choice because of low fee.
You are thinking the opposite mate! Have you ever think about the other side the crypto currency has, if not then listen the price and the value of the crypto currency is now very high and the people who are having the high information about the investment at the right time must know the points about the potential that is increasing more and more. The value of the bitcoin will be high when the importance of the bitcoin will be more than the fiat and the regular money because it is easier to use.