"Why are people using [Prediction Markets] instead of FanDuel or DraftKings? ... Interface is a lot simpler... It's do you think this team is going to win or not?" Prediction markets like Kalshi and Polymarket are encroaching on the Total Addressable Market (TAM) of traditional sportsbooks. By simplifying the user experience (removing complex spreads/parlays), they attract a different demographic or steal share from incumbents. This represents a competitive threat to traditional sports betting equities. WATCH. Monitor if prediction markets gain significant US market share in sports verticals, which would be bearish for traditional sportsbooks. Regulatory crackdowns on prediction markets could eliminate this threat, benefiting incumbents.