I think it would be better for casinos too if there were no gambling addicts. If everyone was gambling responsibly, the negative connotation surrounding gambling would disappear and without it online casinos would surely get more customers in the end. After all, their aim is to make profit, not to create problems for people.
How can the casinos get rid of the addiction in gambling, those addicted gamblers are making them make money at the cause because they never gets tired of gambling and also spent their last money on gambling each time, gambling is very wide that it cannot be moderated as you're talking, even the government cannot do that nit to talk of the casinos, are they the ones to still carter for how we live our lives as well outside gambling.