excluding lost keys, there's close to a trillion in personal incentives for the invested to solve bitcoin's problems, Paul Keating used to say 'always back self

excluding lost keys, there's close to a trillion in personal incentives for the invested to solve bitcoin's problems, Paul Keating used to say 'always back self-interest — at least you know it's trying'. Even if POS doesn't replace POW, I'm curious whether the combination of POS and game theory does, in that breaking POS becomes incredibly expensive, because breaking the system would destroy the value of the stake.