They can not leave because all non-western countries have no real rule of law. If you flee to dhubai from russia taking your wealth with you, it takes one phone

They can not leave because all non-western countries have no real rule of law. If you flee to dhubai from russia taking your wealth with you, it takes one phone call for you to be send "home". All those shiny private non-western kingdoms come, surprise, suprise with a king who can undo any citizen on a whim.