A person holds a mobile phone with the Polymarket logo and prediction market platform displayed in the background. The prediction markets study reveals an alarming reality: more than half (51%) of traders admitted to funding their accounts with borrowed money. Sandberg stresses that prediction markets should be viewed similarly to going to a casino. “There is nothing wrong with using these prediction markets as a form of entertainment,” Sandberg explained. Consumer WarningsCasino.org reported this week on the Australian government warning the public to stay away from prediction markets.