it is perhaps prudent to differentiate hackers and bounty networks. id murder is continually becoming more and more pronounced by radicalized nitwits thinking it is religious. regardless - assassin is a mindset, occasionally assassins meet someone they are unable to beat. i have been subject to more paid hunts that you could count - i never see any money for real of course. real hits and "casual discovery".
it is never really effective. that all goes to the soft targets used as plants and bait. if you play the game you always lose. in the end. 

https://en.wikipedia.org/wiki/Ross_Ulbricht?wprov=sfti1