It is tangentially discussed further down. Despite appearances the internet is a fragmented space with different laws and regulations depending on the location of the user. The service provider has to account for this. And while many large cooperations just steamroll the smallest and disorganized entities (e.g. Liberia), this does not usually work with better organized ones (e.g. Nigeria). This can make it too onerous to run a given service in a given jurisdiction with a low ROI. For example, do business in Argentina, try to lawfully get your money out, and see how far you get.