I still believe that is too broad of a definition. I go back to carnaval games. Those are games of skill but they are made in away to reduce your chance of winning, so luck is still a major factor.
Meanwhile loot boxes are neother a game of chance or a game of skill. They are a purchase and you get what you get. What are those mystery box toys called that everyone was going crazy for last year? LuLu dolls or whatever. Those are loot boxes. Should we regulate them like we are trying with video game loot boxes?
I honestly am not sure this is only about addiction. Instead i think this is mostly about parents who dont monitor their childs activites and want aomeone to blame for their child spending thousands of dollars on a video game.