Because the market can be manipulated... let's say i create a coin called Toshi, 10 Millions Premined, i make a airdrop of 1 million coins and leave 9 million for my self, then i go to the platform where i can predict the future and place a bet predicting my coin will lose 90% of it's value, after that i go and sell 2 Millions of toshi crashing the markets and sending my coin down by 90%, i win the bet. Now you see the risk.


Futuur has been there for some years now, and is a good option to bet in absurd things like World War 3 and other stuff.