Official statement from Valve.
We shared with the NYAG that these types of boxes in our games are widely used, not just in video games but in the tangible world as well, where generations have grown up opening baseball card packs and blind boxes and bags, and then trading and selling the items they receive.
You’re right! We should stop that too!
This shouldn’t be an “edge case”, and it really shouldn’t be only about just minors. The legislation needs to be cut and dry, and most of it definitely isn’t clear enough.