One reason why stars need to make the big bucks is because their whole life changes, and they have to worry about stalkers, etc.
When I worked for Suzanne Pleshette a lot of the guys who I worked with wore bullet proof vests. I did not sweat it, I have lived in bad neighborhoods and I was not afraid to be a doorman in a good neighborhood.
But, a lot of the stars have to worry about stalkers, so they need security, and they need to be paid enough to be able to live in a safe home, etc.
And when I worked at Gemstar, we had body guards for the stars, along with limousines and private jets.
When you get rich and famous then you need security, and everything changes.
Salute,
Tony V.