Currency denationalization is to get rid of government control. However, many governments now prohibit the use or holding of Bitcoin because they cannot control Bitcoin.
Regardless of volatility or decentralization, Bitcoin cannot replace fiat currency. The government cannot agree that coins beyond its control are legal tender.
If Bitcoin becomes legal tender, more and more cryptocurrencies will appear in the future. Everyone can issue coins, and no one can stop it.
So will the future economic system be divided into countries?