I was thinking exactly this - I'm not massively clear on where loot boxes and blind-pack card games/sticker collectables differ. Both are fixed price products where you don't know the contents, with the value of said contents varying massively from the invested cost, along with the ability to trade/sell the contents on secondary markets.

Trading Pokemon cards, I reckon I spent more on booster packs trying to get a Charizard than I've spent on all of the chests, loot boxes and packs in games, for nothing more than a piece of card that (sadly) eventually gets water damaged...