I think that in the foreseeable future, the bitcoins will not be able to replace Fiat money, in my opinion, this is obvious. Many people are still financially illiterate, and cryptocurrency is an empty sound for them. Banks in their usual form will not disappear, but I think they will try to introduce cryptocurrency technologies and adapt them for their development. This should lead to a symbiosis of Fiat and the crypt or their parallel existence in banks.