I think that there may be clever ways that a co-operating group of risk-reducers can "game" the current socio-economic system.

Specifically, we should be much more risk-tolerant in our acquisition of money than the average person with our abilities. A career in a large firm such as a law firm is certainly good, but why not take an option such as entrepreneurship that has a long tail of increasingly high returns? If a sizeable group (say, 30 people) of co-operating risk-reducers all take high-risk, high-reward paths, they can produce a greater expected return than if they pursued the usual cautious, steady job routes.

In cases where existential risk is mitigated in a way that also allows the risk-mitigators to survive - for example because an FAI is built within their lifetimes, or they are successfully cryopreserved and then reanimated, they can arrange for the post-risk society to reward those who took risk-mitigation action such that, taking into account the discount rates of the mitigators, the risk mitigating action was on balance a positive contribution to the future discounted reward of each individual mitigator from the point of view of the mitigator today. This could be construed as akin to a financial instrument.