You misunderstood me. I was responding to a comment that execs must be paid enough money to never need to work again because they may be "unemployable" if they are fired. I was making the case that this isn't literally true, and even if they have to go back to the job they were doing before becoming an exec (and I don't know if Sandberg was ever a PM), it's not some terrible situation. Obviously Sandberg isn't going to become a PM. But she might have if she was only worth 1.6m and for some reason really unhireable for another CXO position.

Unless an exec is fired for financial fraud or serious misconduct (and even the latter isn't always a barrier, there are many counterexamples) they'll pretty much always find another role of equal status, if maybe not equal comp, if they want it.