I'm not sure about your other questions, but regarding your claim that "these people have now an additional incentive to not leave the area", I don't think that

I'm not sure about your other questions, but regarding your claim that "these people have now an additional incentive to not leave the area", I don't think that's true: >In our pilot, the income will be unconditional; we’re going to give it to participants for the duration of the study, no matter what. People will be able to volunteer, work, not work, move to another country—anything.