States spent years rolling out the red carpet for online sportsbooks. Now lawmakers are attempting to cordon off an industry designed to be everywhere. In the months after a 2018 Supreme Court decision opened the door for states to legalize sports betting within their borders, giddy lawmakers across the country couldn’t move quickly enough. No one wanted to miss out on the billions of dollars in tax revenue that the high court had suddenly placed within their reach—or, worse yet, to watch that easy money go to neighboring states whose leaders had the presence of mind to move first. Within a month of the decision, Delaware Gov. John Carney bet $10 on a Phillies game—the first legal single-game sports bet outside of Nevada.