I see it as an experiment in thinking about leverage. If you minimized all the corporate office bullshit, leveraged your work to the max, AND worked hard on top of that, how much could you earn? The baseline becomes your work earnings WITH corp-bullshit, poor leverage, and lackluster effort, and then he extrapolates from that.
Leverage analogy: think schwerpunkt in blitzkrieg. If you amass all your tanks on one sector of the front and crush the opposing line there, then you will have more of an impact than if you spread the same force out over a wider area.