I've heard this theory again and again and as someone who works in a (non-tech) industry where it is the norm for people at the bottom to work very hard for very little,while the bosses travel the world and live in huge beautiful homes, this does NOT seem to be the case in reality. Myself and my colleagues find it hard not to become bitter about it and to stay motivated to work hard. I only graduated 6 months ago but about half of my class has already become so discouraged by this system that they are thinking about - or already have- switched careers.

On the other hand, in my previous job the boss paid us As much as he could afford to ($17/hr, not bad for retail) and in his life was by no means rich at all. He drives a beat up car and wears second hand clothing. We all respected him so much and felt much more motivated to do well, and also felt like we were an actual part of his company and took it personally how well the company was doing. In my position now, and my colleagues agree, we feel totally cut off from the company and have no interest in how well a collection does (I work in fashion.)

Basically I feel like this theory only works if the CEO is overpaid and the workers are fairly paid. But in the end I think feeling part of a team is better for the company than feeling like you are in a tournament.

I would also like to add that 90k is hardly embarrassingly low. That is quite a comfortable wage that many people will never see in their life.