That's not necessarily true - it's possible for all governments to fail. The winner might be something that doesn't even register as a government today, maybe

That's not necessarily true - it's possible for all governments to fail. The winner might be something that doesn't even register as a government today, maybe something like privatized micro-nations out of Snow Crash, city-states, or a crypto-economy. There are times in history when a government fails, and then there are times when all governments fail, and the world re-organizes (usually after a long and bloody period of multiple wars) into a new system of social organization. The idea of a modern nation-state is only about 150 years old, dating from a series of wars (the U.S. Civil War, the German and Italian wars of unification, the Franco-Prussian War, the Meiji Restoration) in the 1860s-1880s. Before then, the early nation states and concept of nationalism arose out of European Wars of Religion in the early 1600s. Someone who lived under high-Medieval feudalism c. 1300, when the divine right of Kings was a given, would've found the world of the late 1600s quite alien.