I guess you strip executives / owners of their dynastic wealth because it incentivises the next bunch of executives / owners to do everything in their power to

I guess you strip executives / owners of their dynastic wealth because it incentivises the next bunch of executives / owners to do everything in their power to ensure public safety. However safety is not absolute and corporate harms are not always clear cut, as you point out. Perhaps the standard should be something like: does this do more harm than good, maybe weighting good by ~10x. Autonomous cars don't need to be perfect, just 10x+ better than human drivers. Asset seisures should be in addition to jail for the most egregious cases, such as the Sackler family, who got off lightly for all the harm they caused.