1. Support from the government.
Countries who gamble a lot has solid laws protecting their players so gamblers in those countries can just freely gamble as much as they want without having to worry about their rights. This doesn't mean that the countries have very free and loose rules but it just means that they have clear frameworks. Some other countries have some limitations but since their rules are clear, many still gamble.
Gamblers there must be living in a real life fantasy. But don't be too excited, if it's just about the support it doesn't mean an all out support.
And what they are supporting is the legality of gambling and people are free to gamble without having to worry of violating any rules.
Some could think of this as misleading as if they're also giving aid in support of their gambling, no. Governments won't just give out money for people to gamble and that's different from them being supportive through policies.