Smaller or even medium-sized game companies aren't on the same level of magnitude of revenue as AAA companies due to lootboxes (and cosmetics, often housed in lootboxes) breaking the economics of game development.
For example, the first in-game cosmetic Blizzard released for WoW made more money than all of StarCraft 2 combined[0]. Companies don't care to show off products or even entertain small to midsize companies anymore when they can push these cosmetics and lootboxes on customers so easily.
