While $20.00/hr is hyperbolic rubbish the premise is unsound here also. If Company X needs Y man-hours per wk/mo/year to provide product/service Z then Y is fixed. Either they cut man-hours and produce less product or raiae prices. If they can get the same amount of product/service with less man-hours Y-R then the company was being mismanaged. Reduction R was waste and should have been done regardless of the per hour labor cost.
Everyplace I’ve worked, 20% of the workers do 80% of the work. That includes factory, office, construction, community organizing, IT and food service. I have yet to see management that is able to change that.
I have seen some management better than others. Allocating the better workers to the critical paths and the slackers/ incompetents to the less critical paths.