Betting on the verdict: Kalshi case could shape prediction markets https://www.reuters.com/legal/litigation/betting-verdict-kalshi-case-could-shape-prediction-markets-2026-04-06/?taid=69d3ccd350dfba0001002964 https://www.reuters.com/legal/litigation/betting-verdict-kalshi-case-could-shape-prediction-markets-2026-04-06/?taid=69d3ccd350dfba0001002964