Currently, there are many usd-based stablecoins such as, usdt, busd, usdc and maybe many others. To be honest, I used to think that crypto would completely eliminate the usd's dominance of the world economy but I was wrong, it turns out that usd is now evolving to crypto (stablecoins). What do you think, whether in the future bitcoin or other crypto can replace the role of currency in each country and leave fiat currencies such as usd, euro, yuan and others.
Well I think we still have a long ways to go before you should consider yourself wrong in that area. That being said I do not believe that cryptocurrency will replace fiat currency anytime soon. I think that it will continue to work in conjunction with cryptocurrency and eventually yes, devalue fiat a bit, but I simply don't see it taking over ..maybe ever, unfortunately.