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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.
You are very correct on the possibility of wipping out negative perceptions of the gambling market if there be no gambling addicts and the government in some places will begin to see gambling as a harmless activity and the ban and restrictions in some cases will be eliminated, but the thing is that, will that ever happen, will gamblers start taking responsibility and not allowing themselves to slide into uncontrollable addictions in the first place?
This are the question we need to answer or create a poll for to ascertaining the level of readiness from the part of the gamblers to fight against that evil hold of addictions, both the casino and the gamblers will be better off for this on the long run since most at time, many of the cases of gambling addicted are blamed on the casino most especially in the cases of those addicts that have tried using the self exclusion feature a number of time before sliding back to the same casinos again to continue under the influence of high addicts.