It doesn’t matter if there are one or more poor countries because ultimately it’s just a currency. If we as a community can do something for the awareness of bitcoin in those countries then things might change but the basic need of a bitcoin (to send and receive) is internet and not every country has good infrastructure for the internet or technology as a whole. If you want to tell someone about bitcoin in poor country then you have to start with explaining about computer and then internet and then bitcoin. Lack of technology and related education is main problem.