I think it's totally fair that a program designed to support people of a certain income living in Paris requires those people to live in Paris. If you want autonomy you can have it, just don't take the money/apartment. This feels like a cake and eat it to attitude. Government is totally allowed to have aims and reasons behind programs. Having low income people live in Paris ensures there are people available who can do work that can't afford to pay high wages. This is important to having a vibrant city and something reasonable for a government to aim for. If people could just take the money and screw off to anywhere in the country, then we'd effectively see people take a $30,000/year subsidy and go somewhere they could live entirely on that without working, which would accomplish very much the opposite of what the whole program was trying to do.