I'm wondering when we might see regulation, at least in the US, regarding certain gambling-like activities some games have (not just mobile). What I mean is som

I'm wondering when we might see regulation, at least in the US, regarding certain gambling-like activities some games have (not just mobile). What I mean is some games have you build a team of characters. They'll have an in-game shop where you buy "card packs", with chances of getting legendary or what have you versions of cards. Yet nowhere are the chances of getting those type of cards listed and even if there were, there's no regulatory body ensuring that those chances are correct. From what I understand, Vegas voluntarily has rules in place that test this to keep from being regulated?