In many areas, rich communes have joined with other rich communes and have refused to let in poorer communes, for fear that their citizens would be overtaxed to the benefit of poorer suburbs.
Di banyak wilayah, komune kaya bergabung dengan komune kaya lainnya dan menolak dengan komune miskin, khawatir akan warganya diberi pajak lebih untuk keuntungan pinggiran kota miskin di wilayah urban.