Well like most things, its rarely simple. The First principle is only in China and similar are stuff like loot boxes are considered gambling and illegal, reason for the the whole must show % thing. As for the CsGo one, that from my understanding was not on the loot box side, but rather that people were using weapon skins as basically poker chips to bet on matches. Reason for it being scrutinized being that its basically the same as betting on a horse race or a sports game, i.e your betting against other players and have the chance to make nothing. Now this is were wheel events and the like are tricky in the states. Cause in functionality its more like a capsule prize machine then actual gambling, basically being the distinction is that even if its a prize you don't like its still something, with the main gray area that said objects legal ownership is shaky. So is stuff being done illegal at least to the letter of the law in the states, technically no, is it still bad faith type system, yes. Really all we can hope for is something like listed odds and no background fudging, at least under current rules, though doubt Tencent would put pressure on Oasis given what they do with stuff like fortnite.