Polymarket CEO Shayne Coplan blasted traditional sportsbooks as a "scam" at Axios BFD and said he expects the Supreme Court to eventually decide whether prediction markets can offer their version of sports betting.

Why it matters: Prediction markets have enjoyed a string of legal wins allowing them to offer sports betting via "events contracts" in the handful of states that haven't legalized gambling.

Driving the news: "I think at some point" the Supreme Court will settle the matter," Coplan said. • Coplan argued that the traditional sportsbooks "all rip off the consumer" and argued that "none of them innovate." • He also criticized the current "patchwork" of state-by-state regulations on sports gaming and what he called the American "duopoly" of sportsbooks, DraftKings and FanDuel,

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