What are the disadvantages of prediction markets?

Prediction markets can be susceptible to manipulation, as individuals with significant resources may influence outcomes for their own benefit. They often require a large number of participants to function effectively, which can lead to bias if the participant pool is not diverse. Additionally, legal and regulatory issues may limit their operation in certain jurisdictions, restricting access and participation. Finally, the reliance on collective wisdom can lead to overconfidence in predictions, even when underlying data is flawed or incomplete.