Prediction market platform Kalshi has threatened legal action against Netflix following the release of a trailer for an upcoming documentary covering the financial prediction industry. Attorneys representing the prediction markets company sent a formal cease and desist letter to the streaming service demanding the immediate removal of the promotional video for Instadocs: The Prediction Market Games alongside a public retraction. The legal dispute centers on a specific scene in the documentary trailer filmed during a watch party in Las Vegas, Nevada. In the clip, an attendee displays a mobile screen showing a $5,000 wager placed on Spain to win the…