The duty of luring/convincing them is not so that they abandon the casino that they already play on; there are gamblers who would play on various casinos, and there is nothing wrong with that.
Luring/Convincing these gamblers is just for them to have another option in case the other casino that they play on starts messing up tomorrow, which is not impossible.
I agree but still it's not an easy task to lure especially those players who're already using a platform that they trust. Well, if someone gets success with such type of luring then that will be a really great job but it's going to be a tough job by the way.