I guess it depends on whether you're a CEO that's dedicated to a company or a CEO that's dedicated to a company until someone writes a check with lots of zeroes.
It's not as black and white. (dedication vs cold, hard $$$ )
Professionally, beyond paychecks, maybe not all CEO positions are the same (i wouldn't know ). You'd seek some freedom of movent, descision power and prestige too.
But yeah, she may very well have a clause not allowing her to jump to Intel . That didn't stop the rumors too much