I think FIAT is in a bubble! Money is just pushed out as a loan to all the banks and when everything is measured in FIAT, people had to just go with it. Banks use all that free money to push prices of houses and everything up! How many buys their own house without a loan for tens of years? How much do banks invest into appartments that they then rent? If crypto gets mainstream, FIAT will come down, making banks use crypto as their main currency and therefore move back to their old place of not running everything. What goverments will do is a good question. I don't think people are willing to let goverment regulate cryptos, like they regulate current markets.