The booty box is the most popular micro-trading mechanism at present. Players can get a reward for virtual goods when they buy a box and open it. But the virtual goods are not fixed, but random. Probably, you will get low-value or useless items. There is a very small probability that you will get a reward for rare high-value items. This mechanism has been widely criticized as gambling.
Hawley pointed out in an interview with Game Website that there are many smart people in the game industry who believe they can design games that do not depend on gambling. Home-focused lobbies expressed support for the bill, while the game industry lobby Entertainment Software Association issued a statement against it, saying it would hurt the player experience and affect hundreds of thousands of practitioners.