Bitcoin could mean a lot to third world countries in terms of growth and development. I don't think the citizens of those countries would necessarily need to be using Bitcoins as we're talking about countries that can't provide full accessibility i.e proper internet services. Central banks of these countries can invest a part of their reserves into Bitcoin and taking it out a few years later would give them more money (that is if Bitcoin grows) instead of traditional USD margin.
I agree. For countries with poor or slow growing economies, the cryptocurrency market can contribute a lot of change and do significant good in improving their trade and investment industries. Also, it gives little people the power to better their lives through small investments. As they say, when the people is empowered and is going places financially, then the country also is empowered.