He isn't being paid for his work (which I assume you are conflating with labor); he is being paid for the perceived value he can bring to the company.

His decision-making can absolutely influence the bottom line far more than any single Amazon warehouse worker could.

Now, I'm not saying that warehouse workers are worthless or should be treated like shit, far from it, but if Amazon doesn't pay him this much, some other corporation will. That's the free market.