Are Indian tribes building too many casinos?

I think we all enjoy playing at a casino every once in a while, to test our luck. But, are Indian tribes trying to capitalize and build too many casinos? Case in point: An Indian tribe in Arizona wants to build a new casino not on their land, but rather urban land, located over 100 miles from their reservation, in Glendale, Arizona. The city would be responsible for water, trash, security and roads to the casino, at taxpayers expense. Question: Are Indian tribes building too many casinos, NOT on their land?

Source: USA Today