It takes more years to abolished fiat and turn into crypto. There are terms and rules, agreement between the countries and the world bank, fiat treasuries from the past, lending of fiat, and the likes should be put into consideration before implementing crypto. There are a lot of major things that will change and affected by the crypto abolishing the fiat. The world must be prepared to that kinda advance technology in order to anticipate the worse possible scenarios all over the world.