Ethiopia is still a poor country, with an estimated population of over 85 million people. However, it has one of the fastest growing economies in the world, with annual GDP growth of 9%-11%. It has the greatest water reserves in Africa, and is one of its most fertile countries. According to the New York Times, it has the potential "to become the breadbasket for much of Europe if its agriculture were better organized."
Ethiopia has a fascinating philatelic history, and most serious collectors who specialize in Ethiopia are Europeans and Americans. I expect that this will change over the long-term, as it has for so many countries which have risen out of poverty. It doesn't take much imagination to envision how prices for scarce, inexpensive issues of Ethiopia will be affected if more of a middle class develops and more Ethiopians begin collecting their own stamps.