Only 4 countries from Africa are listed , South Africa , Kenya , Algeria and Ethiopia , I don't know how they acquired such data , but I can assume the data is

Only 4 countries from Africa are listed , South Africa , Kenya , Algeria and Ethiopia , I don't know how they acquired such data , but I can assume the data is not accurate about the companies listed from Algeria (companies I know). Also some big African market are not listed : Egypt, Morocco, Nigeria. Or is it that the internet companies of these countries are many small companies that compete and do not monopolizing the market?