Gambling clans shouldn't really bother you like the way they do, they are for the most part only on world 2, or exist in small varying amounts on other worlds. You basically have to go out of your way to be bothered by a gambling clan. Who cares what they're making, doesn't, or at least shouldn't, really affect your gameplay. It's emergent gameplay, let them do what the f*** they want. But that's neither here nor there.