The problem is always broke down to just a few issues for Countries like this.
They lack internet connection or they lack places to buy/sell bitcoin in a manner that would replace the current set up. Cell phones seem to be the only way to get around both those issues but do not know how you can create a internet network this way.
The problem is poor countries are poor, as in average person living on less than $1.50 US a day. It doesn't matter what you use for money -- poor is poor.