A few countries and central banks have been talking about digital currency, and most of them are carefully ignoring the term crypto. Fact is- digital currency is not the same as cryptocurrency. These countries/central banks are recognizing the benefits of the digital currency features of cryptocurrency, but they dont want any of the decentralized uncertainties that come with blockchain-based currencies.
Will countries or central banks create their own cryptocurrency?
OP, I think first you need to realize that crypto is not real money and that these banks or whoever thats bringing up the topic of having Blockchain for banks is not doing so for it to be used in replacing fiat, rather they will create their own Blockchain which the government can control and people can invest into the hands of banks instead of going for the real Blockchain which doesnt give the government control over peoples money.