I think the government should first think about whether to legalize bitcoin domestically, think of its positive and negative impacts. If they think, bitcoin has a greater negative impact on positive impacts, the government will not legalize it, and vice versa. I strongly believe that bitcoin can affect the economy of the country, if the prosperous economy rely on bitcoin then the country's economy will improve.
Bitcoin cannot really affect the economy of a country because if that is possible then bitcoin will become a very popular cryptocurrency or coin in different major countries since it can affect the economy of a country and makes it even better which is not really happening. Bitcoin and other type of governments will just stay for being not decided because they still need time to study each side.