Bitcoin is not the solution to countries with high poverty rate if the leaders are all corrupt.
Not only the leaders, but the population as well. If the country has corrupt leaders, it's because the local citizens put them on the power positions where they are through democratic elections. Bitcoin is a neutral tool which can be used for the good or evil, depending who is using it, and what their purposes are. Bitcoin alone can't do miracles, but it certainly can help nations, groups of people and individuals who want to thrive in an ethical way in life, aware that abusing others won't take anyone to a good place futurely.
Thankfully you don't need your corrupt leaders or countrymen to adopt and be benefited by Bitcoin, due to the decentralization characteristic. Therefore, don't worry too much about others, do your part and reach as far as you can conscious your methods aren't the same they use to progress in life and be proud of yourself for that.