I think those gamblers try to open double accounts in the hope of getting more bonuses. Most of the time, they bet regularly on one account but try to get those bonuses with other accounts. And these activities are prohibited for gamblers. Those who engage in such activities will not be able to benefit from gambling sites or they will be at risk of big losses. In addition, some gamblers who have such an intention, they do various illegal activities for a long time to cheat. However, those who gamble for the purpose of this cheating are detected in a short time. No gambling institution allows this kind of cheating.