Today many countries accept bitcoin as a virtual currency, is it because bitcoin is so high that they think bitcoin can change the country's economy, or because the country has many bitcoin users already?
Economic of a country is actually depends on some facts, like no matter what other country's do but do your country's person accept Bitcoin as their payment method. So, I don't think so. The bitcoin can improve the economic position of an individual person, but not of the whole country. For now, it's badly pushing nation economic. Why? Simply if some people have bitcoin and they decide to spend it but very limited merchant which accept bitcoin, they will sell it and convert into fiat. Imagine that suddently people has $10K just like comes from the air.