There was also a version of Zeus dedicated to "hospitality"(philoxenia, friend of foreigner).
https://en.wikipedia.org/wiki/Zeus#Roles_and_epithets
Zeus Xenios (Ξένιος), Philoxenon, or Hospites: Zeus as the patron of hospitality (xenia) and guests, avenger of wrongs done to strangers
World of Warcraft and Diablo are gacha. Every time you play, you are "pulling" and hoping for a good drop(item). What modern gacha games did, is take that gameplay/psychological feature and directly monetize it(instead of indirectly monetizing it through a subscription/1 time payment).
But both are gambling. I am ok with having age restrictions but we need to be honest with ourselves. And what is "fun" is whatever makes neurons activate. Gambling(ie rpg elements) has always been a core mechanic for many games.