3 links have been added on this idea.
  1. Several countries are considering launching central bank-backed cryptocurrencies that are more stable compared to other cryptos. These will give fiat currency very stiff competition.

  2. Cryptocurrencies are becoming increasingly popular worldwide, and top cryptos such as bitcoin might replace real currencies within no time.
    https://markets.businessinsider.com/news/cryptocurrencies/bitcoin-vs-fiat-global-finance-2050-crypto-experts-finder-2021-7