I said similar, not identical. The primary role of a futures market is for consumers and producers of commodities to hedge out their risk so that they don't go bankrupt if there's volatility in the market. Speculators (by which I do not mean gamblers) make money in futures markets by acting like insurance companies and absorbing that risk. Hedgers take "losing" trades that are equivalent to paying an insurance premium.

Prediction markets could be interesting to hedge a bunch of weird little things. Alas, not how things have gone so far really.