Credit: Kirby Lee-Imagn ImagesAs prediction markets like Kalshi and Polymarket continue to explode in popularity and gain market share in the United States, controversy about the platforms has swiftly followed. Prediction markets have served as a convenient workaround for sports betting in states where online gambling on sports is still forbidden. As such, sportsbooks like FanDuel and DraftKings have quickly developed prediction markets of their own in an attempt to compete with the likes of Kalshi and Polymarket. Those companies will not be able to advertise their prediction markets during the game. The NFL has been publicly skeptical about prediction markets.