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Gambling which abstractly seems rather harmless has been banned. So, some taking a hard look at highly additive gamely seems reasonable IMO.
Edited: I put drugs in a similar category, but I can see people disagreeing with that.
Which I think get's into the same incentives as these games. If the house get's a cut of from poker players without risks they have reason to promote addiction. On the other hand friends playing for bubble gum can enjoy betting without meaningful downsides.
I don't think their are clear cut answers, but special regulations for companies due to the nature of capitalism has precedent in the US.
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