I do believe those people which live at poor countries they can improve their life with bitcoin, besides that one thing is sure everyone that does use bitcoin, earning it online may change their life and who knows if they do make a project to help bitcoin and support it.
Bitcoin can be a sideline for those who have a full time job, however it can also be a full time if you can earn decent from it like being payed from your skills online, and this way it can help a poor country with lack of opportunities for its people to find job.
I think only those people who provide the gadgets and internet which is the basic requirements of bitcoin to access the sites but i think it can not help poor countries it will start always on the people who have the basic requirements and their willingness.