absolutely no one is smart or productive enough to justify $692m in pay. they could hire thousands of engineers for that money.
Giving him 700m in stock to keep him around is worth it for both the investors and employees.
Upper management isn't paid based on how smart or productive they are. Google has like 400 billion yearly revenue. A CEOs decisions have enormous consequences, if a CEO can make slightly better decisions than another, it'd be easy to justify $692m in pay.
That said, I don't believe Sundar Pichai is a great CEO. He's might be an ok bean-counter, not sure, but I'm pretty sure one can get cheaper bean-counters.
> they could hire thousands of engineers for that money.
Yes and pray what would they do with them?