Are we talking about Europe where you are free to live where you want? If people are living in France it’s just that it’s cheaper nobody is prevented to live in

Are we talking about Europe where you are free to live where you want? If people are living in France it’s just that it’s cheaper nobody is prevented to live in Switzerland. The main problem arise when the janitor working in SwitzerlanD is getting 3x the salary of the high school tacher in nearby France. Btw Zurich where the cost of living is higher is far away from any border....