Bitcoin can be a useful tool, probably more at the international level of economic relations, but not for the people themselves, since people in such countries not only cannot afford the crypt, but also the Internet may not be accessible to everyone. And bitcoin will never replace the truly important reforms, education and infrastructure that are needed to fight poverty.
Bitcoin have been seen as another way to up lift the poor but the truth is that things are not done that way and problem now is that even if you want to invest one of the key things that is needed is funds because from another view the high the funds invested the bigger the profit and this is why a lot of people that have money keep making money because they have enough money so this one of the reason why the rich keep getting rich.