It is about 80% an instance of the sunk cost fallacy, but RSU payout is based on past performance, so higher performing employees will be granted more RSUs. That means that if you got a 10% RSU bonus over average due to performance, you'd be losing out on a portion of your compensation for your past work.
Also there's something to be said for "the mirage I know is better than the mirage I don't know". Although in general I'd agree, if you're capable of performing well at one of the big guys, you can probably go to any of them, and get a starting bonus to offset your "losses".
Also there's something to be said for "the mirage I know is better than the mirage I don't know". Although in general I'd agree, if you're capable of performing well at one of the big guys, you can probably go to any of them, and get a starting bonus to offset your "losses".