I’m an American so I get it but everyone needs to relax. Half the world has had online gambling for years and they still manage to have sports. In fact, the data makes it easier to catch people point shaving or whatever. Plus, we already had sports gambling. It was just illegal or done in casinos and racetracks.
It reminds me of people saying “If we legalize marijuana, won’t people drive high?” Yes. Just as often as right now.
I’m not saying gambling is good. I hate being in casinos and only bet on sports here and there — I find betting $1 is as much fun as betting $100 because I want to be proven right more than I want to gamble — but I know people who are problem gamblers. It sucks. But all addiction sucks and usually, harm reduction works better than prohibition.