No centralized party can be trusted with such immense, unprecedented power. Despite that, I still consider both Anthropic and OpenAI some of the least untrustworthy possible forces for this. (I am one of the only people on Earth with this opinion, but whatever.)

Decent odds things will go bad under their stewardship, but even higher odds with lots of other entities. Dario and Sam at least fully grasp the enormity of what they're about to be responsible for. Zuck does not. Xi Jinping and Donald Trump may or may not but in any case would use that to effect great harm.