Bitcoin can be invested not in a country, but in a specific commercial project located in a specific country, since today it is hardly possible to find national government programs in which one could invest in bitcoins. If it is a commercial project, then it is profitable or not profitable to invest in it, depends on the project itself. It is very difficult to say anything in advance here. Many worthy firms from developed countries locate their production facilities in developing countries to be closer to raw materials, and they work successfully.