Senior people are resigning from OpenAI. If that were true would they quit the company?
Another explanation is a fallout between Ilya and Sam about product readiness and safety:
https://x.com/andercot/status/1725679858939003349
It seems MS and the other investors didn’t have any pre-knowledge of the firing: https://www.forbes.com/sites/alexkonrad/2023/11/17/openai-investors-blindsided-by-sam-altmans-firing/