Why does feinberg emphasize that awarding compensation based on the financial circumstances of victims "happens every day in courtrooms" and that our system of justice "has always been based upon this idea"?

Feinberg addresses how the frequent practice of granting victim compensation unequally is widely accepted. He emphasizes this with use of the words "always" and "every day" to express how common it is that people are treated unfairly in the courtrooms.