There are no psychological tricks. I have never bought anything in my life ever, never spent money without knowing i was spending money. Everytime I spent money, regardless of how foolish it was I did so of my own free will. No one has ever tricked me into spending money somehow and I didn't realize it. And its damn near impossible in a game because you have to verify you're going to spend money by first adding a payment method, then you have to approve it. You know full well you're going to spend money and it's up to you if it's worth it.
To me there is nothing wrong with loot boxes. It's no different than buying a pack of pokemon cards, a blind box toy, trading cards, or a lottery ticket. Even a bubble gum machine is taking a chance you'll get a flavor you like out of it.
And for people who say they prey on children all I have to say is that it's the parent's fault if a child spends money. They are a child they aren't supposed to have access to bank account numbers or credit cards.
Lazy, mindless, unwilling and stupid people want rules for this kind of shit because they dont want to think for themselves, they dont want to be bothered to parent their children, they want to blame someone else for their dumb mistakes, and they want someone else to do the work for them.
I understand your reasoning, but that's because you are a careful spender (even with things you eventually regret buying) and, essentially, you know what you're doing.
But this is the point, don't you think? For 18+ games, I agree with you 100%: I don't like loot boxes, I decide to not buy those games, I hope they don't put them in games I like, and that's, essentially, it.
But for 6+ or 12+ games? You say parents should be careful with their children, and again, I agree with you 100%.
Problem is, "parents" are not tech people, we're not there yet, and maybe they don't even know what a loot box is or, heck, even that microtransaction exist as a concept.
This is my experience and it's not representative of everyone of course, but my parents are not able to use a smartphone beyond the absolute bare minimum (call, photo, mayyyyybe whatsapp) and so are my friend's parents. They care, but they just don't know what's going on. Children are MUCH more literate and capable, when it comes to technology, the gap is massive.
The point of the discussion is, I think, to be able to make an informed choice.
To do it, give people the info they need. PEGI should do it, ESRB should do it. But if they don't, and if there are reasons to think that publishers are acting in bad faith, then (and only then) government regulation is required.