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The highest that they can do is to set an age limit which has already been set to 18+ or better still have a self-exclusion feature, but anything outside these two, the casino sees it as a drawback for their profit since they are in the business for the profits.
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.
Well, this is not to sound pessimistic but there would have never, and there will never be such a thing as no gambling addicts,, as long as its humans playing gambling, there will always be abuse, and abuse the major thing that gave or gives birth to addiction.
If there were really no gambling addicts, sure there would have been alot of people giving attention to gambling which simply means that gambling casinos would have had more customers.
But also understand that, the more the number of people in gambling, the more chances that there would be a good number of abusers, and gambling abuse is one of those things that leads to gambling addiction.
So, if you consider this, you will realize that it is still the same, it's like running around in circles, what would have been if there was no addiction is what that is currently is, because there was and is never a time there wouldn't have been addiction in gambling.