Startup Idea: Betting

Hello, the idea of ​​a startup has appeared, but there is no time to implement it. Therefore, I decided to write, maybe someone is implementing, and it is interesting to hear your opinion.

We all ever made a bet or just talk a dispute. Betting is possible between two or more people for an event.

Take, for example, the future presidential elections of the Russian Federation. Suppose we have 3 candidates P1, P2, P3, the fact that the candidate will become the president of a certain amount of money.
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Let candidate P1 become president, then all those who bet on him won this bet, their bet is returned, plus the losers 'bets, distributed in percentage terms between the winners' bets.

That's actually the idea, make a bet and earn :) The service can also take a percentage of the losers' rates, and that's profit.

Waiting for your comments.