I don't know how we could put limits on gambling that would make sense, though. There's a huge difference in bets that I used to make (which were all black-market sports bets, usually on 'game winner' or over/under) ~ once a week during the NFL season vs. the shit going on with FanDuel and all these phone-based gamified services. And that stuff absolutely encourages you to make bets that you can't afford and can easily turn into a problem even for someone who isn't 'addicted' per se -- it's like the predatory loot box model from video games.

TLDR I don't know how you write a law that would put hard and fast limits on what can be bet on and how much an individual is allowed to bet during a week in a way that would be palatable to the companies. I'm in favor of the blanket ban at this point; the black market for betting has always existed and it was better than the current setup.