@woard You're not wrong, but I don't fully agree with you. Any psychologist will tell you once randomizing payout is involved engagement goes up. Loot boxes are designed to interact with the pleasure part of your brain, shootymans are designed to interact with the aggression part of your brain and these operate differently so your metaphor isn't 1 to 1. There's studies with mice where they use electrodes to stimulate pleasure and attach it to a button and attach food dispensing to another button and the mice will choose pleasure over food. I'm not against loot boxes for adults, and I'm not an expert, but it's concerning giving them to kids. Here's a study talking about how slot machines are 3 times as likely to get people addicted to gambling than other games inside the same casino.
https://link.springer.com/article/10.1023%2FA%3A1014580112648