Your profits come from other Predictious users who made the opposite prediction.
Predictious matches buyers with sellers, when you own a long share, it means another Predictious user owns a short share. Once the market settles, the person who correctly predicted will win m฿10 (making a profit of m฿10 minus the price to buy the share), while the person who didn't predict correctly will lose the price they bought the share.
The profits of those who predicted correctly always match the losses of those who predicted incorrectly. Those losses are simply transferred to the winners as profit.