Bitcoin opens many doors of new markets, which would affect the economy of a country, the reason why there are some countries who don't like bitcoin because cryptocurrency controlled by no one and because they don't get taxes. But if governments open there eyes and use bitcoin in its positive ways as possible you would be shocked that the third world countries who opens their gates on bitcoin will become one of the best countries we have ever seen.
Indeed bitcoin can affectthe economy because it is a form of investment and if it does progress, a countrys economy will benefit from it. Also, bitcoin provides job to people so when there are jobs available, there will be more taxpayers and the economy will grow. If bitcoin will be legal especially on third world countries.