As far as i know crypto exists to eliminate banks si i dont think that it can be possible to exchange cryptos into fiat by the banks in the future since i guess cryptos are competitors of the banks. In my country, banks are threatened about the spreading of cryptos particularly bitcoin. I knew because i have a friend that are working in the bank and we talked about it because she knew that i am into crypto.
Yea That's True, Crypto-Currency HODLers Will Also Need The Banks But We Need Blockchain To Pull More Advantages Out From The Banks Were By You Won't Always Depend On Fiat Or Banks Most Times