Each casino and betting brand runs its own internal program, with details available on their respective websites. So rather than opt for a self-imposed state-wide ban, you could exclude from each company, be it Caesars, DraftKings, or whoever. One way to combat that is for the player to take action with an individual operator. But this is hardly unique to the USA and all voluntary self-exclusion programs face similar challenges. The system relies upon the individual not traveling to casino venues outside of their home state. However, by breaking it down to the state level, there’s a better chance of sustaining these programs.
The idea that casino workers as far apart as Washington, Florida and New York could somehow police each other’s excluded players is unrealistic.
But in practice, it’s extremely hard to implement a nationwide program. Self-exclusion is undoubtedly a noble idea in theory.