^ They have generic options that are affordable for developing and underdeveloped nations but keep in mind that most African countries have little or no social welfare system, even though many provide universal access to drugs.
Keep in mind there are many other issues that play a big factor such as denialism or poor public health education. Most people in Africa are very ignorant. A lot of people don't take their meds in SA because they don't want to go to the doctor and be seen as "sick".