I’m not sure that the high churn rate at the high end is really in Musk’s interest, but it MIGHT be in society’s interest. Instead of sucking up a bunch of highly skilled and driven people indefinitely, the few who are able to work well in that environment stay and are able to get stuff done while the others leave and spread the knowledge elsewhere, perhaps starting up competing efforts that either complement Musk’s efforts or give Musk a run for his money. This is a strong argument against Non-Competes.