If you believe that the probability of destruction is currently 10%, but the probability of destruction if you decide to quit Anthropic becomes (say) 13%, then the rational move (Assuming you are opposed to destruction) is not to quit.
From Jacob:
> A common response is “if they truly believe this, why are they still building it?” At OpenAI, many have not deeply internalized the civilizational stakes. At Anthropic, the stakes are well-understood, but they are locked in a race to get there first - they believe no one else will act responsibly, so they must do it themselves, despite the risk.