Indeed the scary fact of physical casinos is that they will do all kinds of ways so that we spend the money we have there.
And go home without bringing anything, then makes us more addicted and want to continue playing in the physical casinos
It's not just casinos giving free drinks, snacks and various other stuff to their high rollers to keep them playing, but high rollers themselves expect those kind of things, and if not given, they will see that a mistreating and might not wanna come back and move their "business" elsewhere.
I experienced that many times when working in casinos, gamblers explicitly asking for more drinks, and even getting violent if you refuse.