More likely that we'll see a disintegration of the dominant 20th-century political order (anyway; independent of Georgism), and then a number of local communities will try different socioeconomic systems in the rubble. Hopefully some will try Georgism, they'll do better than their neighbors that try say socialism or fascism, and over that 50 year period the best economic system will win. If there's free migration between states then people will vote with their feet; if there's not you'll likely see successive state collapse and revolution in the states that do not have systems that meet the needs of their people.