I haven’t heard of something like this, a casino limiting the winnings of players based on their place of origin. But more of, casino limiting players of certain countries in accessing and playing to their website. Wouldn’t that be consider as rigid if the system if programmed to kind of distribute different rewards based on location? Anyway, if the concern of limiting payout due to government issues in the source on incoming funds of a player, it should be already covered especially if the casino has license, right?