Allegiance to the Altman/Brockman brand. Showing your alligiance to your general when they defected/ were thrown is how you rank up.

Doesn't matter to anyone at OpenAI, only to Microsoft (which doesn't get a vote). If Google or Amazon were to swoop in and say "Hey, let's hire some of these ex-OpenAI folks in the carnage", it just means they get competitive offers and the chance to have an even bigger stock package.