Many small nations are likely to pass the crypto regulation bill in their parliament and some have already adopted it like El Salvador and what I was talking about was some years later when majority of government would come up with these regulations instead of putting a ban on Bitcoin.They will continue with all their centralized system of CDBC but yes BTC would be mainstream everywhere in the positive scenario.
Big nations are slowly to change in their policies and it is normal to see small nations are more interested in as well as readily to change policies.
The trend is adoption globally, big nations can not stay outside of the trend because they can not accuse Bitcoin is a fraud when they launch their CBDCs. They will try to make more regulations go into force and when they feel good enough with their regulations, they will officially allow Bitcoin and cryptocurrency. It would be 4 years, 10 years or 20 years.