GPs tend to give their own patients the benefit of the doubt, and a worker who feigns illness and gets a sick-note to wave under the boss's nose is harder to manage than one who has been tackled at an earlier stage.
Kelly oddly feigns a lack of certainty about how economically stimulative private equity is, but as evidenced by them only getting paid if they can buy a company and fix it up for sale at a profit, the answer to this seeming riddle is self-evident.