People both in and out of business are embarrassing this understanding. In truth we are all related. Social and financial equity is an important component is today's world. It is clearly a right for tribes to exercise regulatory jurisdiction over their territories. This right is well established within the 500 years of federal - Indian law.
States naturally demand a percentage of the revenues.
In the past states did not provide any type of service to reservations. Law enforcement, roads, schools were federally funded. All of a sudden states had an interest and a Congressional advantage in securing a large piece of the gaming profits. The other fact is that not all of the Tribes have profitable gaming operations. All profits must be used to benefit the tribal people, community and tribal government programs.