Usage share of operating systems the similar correlation for the richest countries and that poorer countries choose Apple's iPhone in lesser numbers. Data from Google however suggests that people in poorer countries are more likely to buy apps on Android. Smartphone penetration vs. desktop use, differs substantially by country. While some countries like Russia still measure desktop use high, there at 77% (and smartphones at 19%) this ranges down to a bit under 5% in Mali where Android smartphones have just over 95% share. In most western countries, smartphone use is close to, but still under 50%. Section below has more info on regional trends
Market share liability Market share liability Market share liability is a legal doctrine that allows a plaintiff to establish a prima facie case against a group of product manufacturers for an injury caused by a product, even when the plaintiff does not know from which defendant the product originated. The doctrine is unique to the law of the United States and apportions liability among the manufacturers according to their share of the market for the product giving rise to the plaintiff's injury. Market share liability was introduced in the California case "Sindell v. Abbott Laboratories". In "Sindell", the plaintiffs were injured by DES,