This is the entire idea behind the concept of "assassination markets" - "prediction" markets on assassinations that are just thinly veiled ways to crowdsource murders by taking bets that you expect to lose against an "insider" (the killer).

It doesn’t need to be as high stakes as assassination. Any public figure could have a free-money loophole with all the stupid bets on things like whether a certain word would appear in a speech.

If I were famous I could start a pool betting on whether I would post a picture of a my lunch this week. I could stake whichever side has the biggest payout and then just make it happen

Futures contracts were a mistake, god damn