. We should know what users usually does to a casino that seems to be having bonuses and whatever, people always tends to jeopardize and compromise the opportunities by having multiple accounts, if you look at most cases over here you would see that is either cheating bonuses with multiple accounts and, no casino would permit that without them restricting that person for cheating and is against their ToS.
Sometimes the casino lower their bonuses requirements and make the offer so irresistible that it attracts not just legitimate gamblers but also people who would do anything to explore the advantage they get in terms of violating the bonuses system on the casino. The good thing is that most of the times these efforts are seen and blocked by the casino by restrictions of all account possibly connected to the act.
Abuse of any system is inevitable and as long as money is involved humans will always make attempts to abuse and take advantage of the system to they own advantage, so the casino is aware of this possibility of abuse of their bonuse system and that is why they make some tough rules that make it almost impossible to get away with that stolen funds from the casino.
Most of the bonuse that are offered by most casino comes with high wagering requirements that make the gamblers to spend all the money back on the casino, so for sure we have to come to a point we're we can only get what we want from those casinos when playing with our own deposited funds.