States that draw revenue from casinos should regulate online gambling, as online has a complementary, not cannibalistic, effect on land-based gambling. That’s one takeaway from a recently published study entitled “Consumer spending in the gaming industry: evidence of complementary demand in casino and online venues” penned by gambling experts Kahlil S. Philander, Brett Abarbanel and Toni Repetti for International Gambling Studies. The authors advise that “US operators should recognize the positive value that online gambling can have with relation to their online operations,” suggesting that operators are best served integrating online gambling as part of their overall offering, as opposed...