FIAT money is our daily currency which has been existing here for hundreds of years, when crypto currencies like Bitcoin is squeezing their way up to become a world currency and sort. Can they co-exist? If so then what benefits we can get from them, altogether? Not separately.
I think it will be possible, because right now let's see that bitcoin is seen a few years back and it is still up and down and we can only understand that it is still running. , look forward to more clarification on it.