Definitely, the main thing that makes bitcoin very feasible as a substitute for fiat is because of the great prospects of global users, bitcoin can improve the country's economy because many fields of work more easily if using bitcoin.
Yes, if we are talking about the bitcoin economical regulation of country it can be possible that it can regulate the finance situation, because of the interest from everyone, it can be recognized as global curency and if the transaction confirmation and fee's make less then they are right now, people would be more using crypto doing purchases