Yes, if you're treated well. It was a fair deal. More than fair, generous. I can't point to anything I did that was worth so much.
You seem surprised? Do you know how things (sometimes) work in Silicon Valley?
No, despite working there and (apparently) making too much money to complain. Spell it out for us please.
I feel the opposite. Looking at the yearly revenue of these companies and dividing them by the number of people that contributed, I clearly created much more value than my comp gave me.
Labor is entitled to all it creates.