This might be a cliche but the answer will depend on so many things, the first is the education level of the people in the country, doesn't matter whatever tech that brought to a country if the people is not educated then it won't be any use. Before any country adopting crypto or bitcoin they should improve the education level of their people, and for some country I believe it's not an east task. And then there is other factor like the political condition, the internet infrasturcture .etc.