It doesn't matter which country allows or not, It means they are taking it seriously. Most of the countries have already taken some measures on behalf of the blockchain system. some are taking it as one of the main concern of the monetary sector. So legal and illegal doesn't carry any importance in this blockchain aspect.
Day by day Blockchain system is getting popular around the world and people are also getting involved in this platform for their present and future purpose. So it's a matter of time when Bitcoin and blockchain will be the mainstream for sure.