I believe that it's part of the responsibility that they accepted during the time of regulation. But the fact is that, most casinos don't abide to the law and they allow gamblers to gamble recklessly because they want to make more money.
I believe that majority of gamblers don't know that they can sue a casino for this reason if not, some would have done it. Sometimes, the body in charge of monitoring the casinos that they abide to the strict regulations are only after their pockets. If the casino gives them fat envelopes, everything is going smoothly.
It is so unfair, all these people are adults not underage children, this type of protection should be for kids and youth at a certain age, a grown ass man shouldn't be relying on someone else to protect them when they stupidly throw their money away.
This is very unfair, because if we turn the whole thing around the gamblers wouldn't want to let go either, let's say a protection is on for a gambler and they have reached their limit and yet they choose to go one more try and they hit the jackpot.
The casino also have the right to reject the win simply because they are in control of baby sitting their grown asses, it's ridiculous as f**k, casinos are run by humans and gamblers are humans too, we all have that greed in us.