Games are filled with loot boxes that drop exquisite items on chance. It's a repeated cycle of charging robux only to spend on another slot machine.
US regulation is far behind protecting children from such scheme. Japan disallows many forms of such loot boxes due to addictive nature.
Crazy to say this when they've basically pioneered and perfected gacha games.
The fact that gacha games are so popular is _why_ they had enough attention to explicitly ban the most toxic patterns at the time. [1]
There's an interesting question of how far to push the bans, though - "in theory" your goals should probably be "don't let people prey on addictive behaviors" and "minimize people impulse buying more than they can afford", but the latter especially is...very hard to make an empirical rule for, and then you get into logistics like people just making additional accounts to get around it...
[1] - http://www.vg247.com/2012/05/18/kompu-gacha-freemium-systems...
I think exposing people to addictive mechanics with guard rails is probably useful for teaching you how you respond to them, before you go to Vegas and blow far more than you budgeted.
In particular, I don't think you're going to ban addictive things faster than people can build them, and I know you can't rely on parents having conversations with kids, so I feel like all you can do is try to remove the whirring buzzsaw of real money incentives and let people learn that it's sharp, but foam sword sharp, where you can't ruin your life permanently (easily) with it.
And also because my kids can spend tens of dollars in minutes on it.
Every Christmas and birthday now is "I want Robux" and they are actively annoyed if they get anything else
This thing is bad for children
The fun single player games only need to convince you they are a fun experience and you should buy them once.
Games with loot boxes are trying to convince you every day to spend money on them. Dunno about roblox, but often the items are visible, and "defaults" are often perceived as poor or noobs.
We can't be naive: It's a whole other level and companies are spending millions on manipulating kids to spending more and more money.
Audience is the problem here. It's obviously not a big deal if the platform is targeted for adults, but majority of users are underage. The platform can certainly implement guardrails for the vulnerable users if they wish to
Of course it's functional, it has to string people along for enough time to get them to start paying.
That doesn't mean grinding a system tuned to get you hooked enough to give up and pay is a 'just fine' as a game. It's openly deliberate malicious design.