Gamers can understand this. Casinos understand this. But how do you articulate the difference to a court or actually legislate against it? FOMO is usually used in a predatory way, like with daily rewards. Paid random lootboxes are definitely predatory, but other rng systems can be genuinely fun. Not an easy problem to solve without stepping on toes.
Dailies are probably something that could be solved with targetted legislation. Harmful to player mental health just to boost stats for investors. Some games need to limit progression, but there are loads of ways to do so other than dailies.