The author has shown us good reason to use collective bargaining, it works to balance the huge imbalance of power between ownership and any single employee.    But private unions turned to the government and found a friendly hand, at least part of the time.   Instead of negotiation for profit share, unions negotiate with a government institution, but not private ownership.   The federal government abandoned it's support mechanism for unions, and unions abandoned the workers in low wages that needed their support in favor of trying to find new 'opportunities' to leverage concessions out of large corporate entities, and of course Government contracting.

Worse Unions chased the money the could find in higher paying jobs that did provide a good standard of living, and forgot about organizing those who aren't even earning the deeply devalued current minimum wage.    This is an area ripe for collective bargaining. but without corporate financial transparency - difficult to do,