James Schaap has published The Growth of the Native American Gaming Industry: What Has the Past Provided, and What Does the Future Hold? (Schaap on the Growth of Indian Gaming) in the American Indian Quarterly. Here is a quick excerpt:
What can we say about the phenomenal growth of the Native American gaming industry? In order to evaluate the industry’s development we first need to consider its economic, social, and political history. Then, building on this foundation, it will be possible to predict, strictly from an observational perspective, what the future may hold for Native Americans.
Turtle Talk 
I live near the Choctaw Nation which is Southern Oklahoma. For years they ran a bingo operation which helped their tribe greatly. Over the past few years, with greater gaming freedom, they have expanded and recently opened a giant hotel to go with their casino. I’m not sure how long it will take them to offset the cost of their expansion, but there is no doubt that gaming has helped the leadership meet the nation’s needs.