How is this more of a farce than arcades that allow you to trade tickets for prizes? These prizes have a cash value in a secondary market. To me, "gambling" is

How is this more of a farce than arcades that allow you to trade tickets for prizes? These prizes have a cash value in a secondary market. To me, "gambling" is kind of an arbitrary concept. Would you say that universities are casinos as well? They let students assume risk with an unknown payout. It might be that I'm not defining gambling properly. I'm curious, how would HN readers define gambling?