On Friday, Vox reported that employees at tech giant OpenAI who wanted to leave the company were confronted with expansive and highly restrictive exit documents. If they refused to sign in relatively short order, they were reportedly threatened with the loss of their vested equity in the company — a severe provision that's fairly uncommon in Silicon Valley. The policy had the effect of forcing ex-employees to choose between giving up what could be millions of dollars they had already earned or a...