As a former free market zealot I actually derived UBI as a basic right, just as basic as right to self. The idea of the argument is to start with the commons

As a former free market zealot I actually derived UBI as a basic right, just as basic as right to self. The idea of the argument is to start with the commons as a shared resource instead of first come first served. As such, privatization of the commons must be justified by some agreement with the to be excluded commoners, not just putting a stake in the ground. Borrowing Rawls idea of an original position to negotiate such an agreement it makes sense to at least demand compensation for the rental value of the property before agreeing to be excluded from it. And an equal shared dividend of said rental value would be an UBI of sorts. I later discoverd this principle to exist as “geolibertarianism”