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).
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
These prediction markets are now giving even more people the opportunity to make a small ethical compromise in exchange for non-trivial amounts of money without any of the potential legal repercussions of traditional markets or gambling. That type of ubiquitous corrupting influence can't be good for the health of society.
[1] - https://www.cbssports.com/mlb/news/guardians-closer-emmanuel...