I feel like you condensed multiple paragraphs worth of thought into 2 sentences and I simply can't follow at all. Would you care to write it out in more detail?
I am guessing the idea is ubiquity of prediction markets -> there's a prediction market for the liveness of everyone/anyone -> financial incentive to kill anyone
combined with the idea of the proliferation of local/personal violence
Something like that- I'm an artist/creative and was working on a (Black mirrorish)story years back about this, thats were the thought comes from- a related ransom system would also be built into it- would create an offshoot of Defi known as DeathFi.