top kek logic, stock/option/derivates trading or in simple manner all financial market activities are based on 'gambling' so ban them too
hedging options is basic strategy how to minimised value risk 'borrowed' from roulette in cassino, logic level communist braindamaged people 
Gaming lootboxes in particular involve children, their parents and inability of said parents to say no to their children. Which is why lootboxes will be regulated.
Makers of these games are more than aware they are operating in grey area and will exploit that as much they can. They won't cry injustice when laws regulate these kind of games, they know very well what they are doing is wrong.
Besides, every country in the world regulates various things. It's degree of regulation what matters. Communism was a tad bit heavy on regulation (well iron boot heavy to be precise). But we can't have anarchy either where everybody is free to do everything they want. Maybe on this forum, but not in the real world.
Edit: Stock market is well regulated btw, and people get in prison regularly for pulling off shenanigans on the market. Gaming lootboxes are a novelty and aren't regulated atm.
Edit2: State of Hawaii agrees with Belgium. We'll see how that affects rest of USA.