Ohio’s top gambling regulator says Kentucky made “a fundamental mistake” by legalizing sports betting for people aged 18 and older. But at least one company eligible for a sports-betting licenses in Kentucky says it will refuse bets from people under 21. “I absolutely hate the idea that individuals under 21 can go across the border, open an account and bet,” said Matt Schuler, executive director of the Ohio Casino Control Commission. “I think it’s horrible.” Kentucky legalized sports betting on March 31, when Governor Andy Beshear signed House Bill 552 into law. No launch date has been set for the industry because rules are still being developed by the Kentucky Horse Racing Commission. Of the 37 states that legalized sports betting so far, Kentucky is among five that allows 18-year-olds to bet, according to the American Gaming Association.