Ah yes, "the devs". What percentage of the profit do you think goes to the gameplay developers, the backend developers, the designers, the character artists, the environment artists, the QA team, the writers, the voice talent, the localization teams, and the other roles too numerous to list but too important to ignore, that actually create the game? In contrast, how much do the executives, managers, and ~~parasites~~ shareholders pocket?

Even if you assume a fair division between all people, just look at how long the credits list is. The average developer employee won't go hungry because a couple hundred players stop buying gamble coins.