The fact is that bitcoin can make people earn extra income even many who become new rich. this proves that bitcoin can improve the country's economy, but unfortunately, many countries are not concerned with bitcoin so banned and limit the use of bitcoin.
Yes, it seems that the countries who ban bitcoin are don't want their people to use the currency which they can not control. If they ban bitcoin, bitcoin related comapany will not created then there is no job vacancies in that business that can reduce unemployment, if unemployment reduced, the country's economy will improoved.