Bitcoin have the big chance to replace fiat. Becouse people in some countries were change their money in to bitcoin to save their wealth when their fiat price is fall against USD. Those country need to import logistic that they have to pay with USD. So I think people will prefer like to use bitcoin than fiat.
nope i think bitcoin barely have a chance to replace fiat, how could the world of the financial system that has been built hundreds of years ago (very strong) can be replaced by bitcoin. although bitcoin might have a bright future. but I think bitcoin will not be able to replace fiat