Gambling addiction is not a new issue.  Online sports betting is just a new place to see it.  Same story as people who put $450,000 into slot machines and get back "winnings" of $400,000.  That might involve 50 trips to a casino, with $2,000 rolled over 4 or 5 times.  At least they comp you free meals, at that level. Online gambling, you pay for your own food.