If I make an invention that provides $1000 value to 100 million people, the work i put in is worth $100B. It doesn't matter if i did that in a day or decade.
Sure. The point being that Bezos didn't do that. He did provide value and should be filthy rich, but not $200 billion rich. Much of his wealth is unfairly extracted from others he exploited. If he treated every employee humanely and gave them salaries roughly corresponding to the value they provided, he might only be worth $100 million instead of $200 billion.
What "invention" are we talking about actually? Amazon was simply the first to grab an emerging market. If there was no Bezos, someone else would have made the same thing soon anyway. It was just a matter of being fast to act and having resources to invest, no more no less.