Here's how I see it:

If Oprah dies tomorrow society lives on and for the most part nothing changes.

If all the sewer treatment plant workers die there is a scramble to replace these invaluable workers to abate a national health crisis.

Why does Oprah make more than these individuals?

Is it because she provides "More value" ?

If you believe she does.... then fine.

If society, through implicit acceptance does...then fine.

I don't, and I don't understand the logic. I believe I understand some of the psychology around it...but not the logic.