I think that's between the employee and their own view of the world. If you worked at Yahoo for six years doing something, anything, and then Yahoo buys a six year old company run by a 26 year old for a billion dollars — what were you doing the past six years? Couldn't it have been you? Why not?

Every computer person employed by a company isn't generating a million dollars a year in value, but most could if they were pointed in the right direction. Even those who are generating 10x to 1000x the value of their salary aren't compensated proportionally (hence, why startups exist).