The possible function of this report, as with the truck drivers, was to provide justification to companies to reduce the wages of the workers in the report. It

The possible function of this report, as with the truck drivers, was to provide justification to companies to reduce the wages of the workers in the report. It provides a way to point the finger at a looming "threat" that they'll be replaced, so don't demand increases in wages. This is keeping with the value that McKinsey provides to companies.