> I don't see how OpenAI employees who have signed the We Will Not Be Divided letter can continue their employment there in light of this

Well some may voluntarily leave, some will be actively poached by Anthropic perhaps and some I suppose will stay in their jobs because leaving isn't an easy decision to make.

> some I suppose will stay in their jobs because leaving isn't an easy decision to make.

Anyone who chooses to stay shouldn’t have signed the letter. What’s the point of doing it if you’re not going to follow through? If you signed the letter and don’t leave after the demands aren’t met, you’re a liar and a coward and are actively harming every signatory of every future letter.