Betting exchanges are similar: commissions on winnings, liquidity shortages and spread eat into returns. Prediction markets work fundamentally differently. There is no bookmaker who lets the house win.
Instead, money flows from those who don't know to those who get it right — with risk management, portfolio diversification and disciplined capital deployment. You can trade 24/7, build and close positions, and wait for the binary resolution of the event. Those who understand it are not speculating — they're engaged in systematic trading.