Last January, when DraftKings hired Marie Donoghue as its chief business and growth officer, the sports betting company seemed to be embarking on a familiar business model transformation. The company had spent years competing with FanDuel, Penn, and Caesars, among others, in an expensive marketing battle of hearts and minds to validate the nascent wagering market. Like ride-sharing or the domestic vacation rental industries, the gaming platforms spent lavishly until, frankly, they couldn’t compete against one another with marketing dollars alone. Years ago, many of them decided to move into the content business to increase their user engagement.