The Dancers is (likely - I haven't read it) a country club, which usually has a golf course. Country clubs cost a lot of money to join; on top of that, a golf game costs a lot of money for each game. Golf money would imply that someone has enough money to play golf.
In the US, an positive emphasis for many decades (perhaps centuries) was/is placed on being "self-made" - working hard enough to become rich, that is, having all the niceties of life, like a country club membership and golf money. One would think that the character formed from a solid work ethic would bring out good qualities in people. Chandler says it does not; in fact, a lot of money seems to bring out bad traits in people, hence the disillusionment.