Well people actually guard it indirectly. They could at any time randomly decide to go on a rampage and start taking over other people's property. Which actuall

Well people actually guard it indirectly. They could at any time randomly decide to go on a rampage and start taking over other people's property. Which actually happens when things boil over, eg. during revolutions. So they should be paid for remaining calm and keeping order. I don't think we need to make the distinction between good and bad incomes. However we as a society should be concerned about giving somebody certain privileges without getting any compensation for it. That makes the society inherently unequal, because one group of people is forced to provide the privileges or services for another group of people. Eg. people born in generation 2 are forced to accept and maintain private property privileges on land for those born in generation 1 even though they were never invited to discussions of land distribution in gen 1. Simply stated, the infinite-length land rights are unethical to people in later generations. Continuous payment system would be ethical. This alone could then help resolve other issues in other monopoly related problems as people would have more options to decide how to allocate their life, as you well know it is the case of basic income and when people are not stifled by excess taxes and excess rent payments.