At same time, I don't think people would like to adopt decentralized cryptocurrencies as replacement for fiat currencies, because nobody wants to rely on volatile currencies in daily routine.
High volatility coins cant be used for daily routine, money which is going to be used for daily activities should just be kept in fiat currency, you know the money is stable, but if it’s kept in high volatility coin, your money can drop within a short period of time, and might not even be enough to purchase whatever you want to buy at that particular period of time, so making use of high volatility coins for daily transactions is what I think people are not even going to do.