This seems instructive for considering when a difference in degree makes for a difference in kind. Let's call this "whale potential": the amount of money that a power user can naturally funnel into a casino over a single visit is multiple orders of magnitude more than the amount of money that a power user can funnel into a ski resort over a single visit. For a casino, the act of a customer losing money is not merely a side effect of the activity, it is the primary effect of the activity.

I think you might be underestimating how much money can be spent at a ski resort.