A brief background reference Indian gaming and what got them to the point they are at today.

Because of the decision, the Seminole Tribe was able to build and operate the nation's first tribally-owned high-stakes bingo parlor on their reservation in Florida, even though bingo for profit was illegal under Florida law at the time. Many other tribes later followed the Seminole Tribe's lead by building their own bingo parlors on their reservations, leading many scholars to call the Seminole Tribe's victory in this case the "birth" of modern commercial gambling on reservations

And let's not forget the following:  "In March 2007, the Seminole Tribe of Florida acquired Hard Rock International, Inc. and other related entities from The Rank Group Plc. Today, Hard Rock International is one of the most globally recognized companies in the world and has venues in over 70 countries; Cafes, Casinos and Hotels."


https://en.m.wikipedia.org/wiki/Seminole_Tribe_v._Butterworth