This is a major example why we can't have these things, unfortunately. It sucks because they can be powerful tools, but you're never going to be able to fully police this behavior as one of these platforms.

Gambling has a heavy association with criminality. By allowing open gambling we must also accept the externalities.

Or we could, you know, not legalize gambling.

I do not think it is so clear cut as legalize/not legalize. Current legislation often doesn't even consider this gambling - however, even if you took the viewpoint that making it illegal helps, you then have to accept the externalities that arise - crime rings will develop that offer the services, and now their users are criminals and completely vulnerable to any amount of bad/malicious practices there.

Which, historically, is a much smaller and easier problem than legalized, unregulated gambling.

We already have a model for this in the casino system.

Like sure, there’s some small black market here, but it’s relatively minuscule.