I grew up in the suburbs in a neighborhood that half a dozen tribes represented ~ and a couple of the brothers found it a great location for jumping off to rob banks around the Midwest.
Who said anything about LIVING on the reservation. California tribes use theirs to sell water rights to Angelinos.
A lot of the Indian reservations are populated and mired in poverty, squalor, substance abuse, violence, and family breakdown. Whether in Detroit and inner city Washington, or among Russians, Chinese, Africans, or American Indians, collectivism produces similar results.