Also the most basic question: "You and what army?" Either they pay/bribe whatever governments have an interest in them or they find a way to (threaten to) defe

Also the most basic question: "You and what army?" Either they pay/bribe whatever governments have an interest in them or they find a way to (threaten to) defend themselves against people who are much more organized and economically supported than their paradise for rich people. In the later cases you need to find 'volunteers' who (might) "die in the trenches" and I've got a feeling that you those are not to abundant in a society characterized by the desire to get away. Others have tried and failed. E.g. The Khmer Rouge did enforce massive changes on society, according with their ideology, but in the end they were removed from power with the help of tanks planes and guns.