Why do major consulting firms such as Deloitte, Accenture, and KPMG all use similar selection processes to hire employees?
They all only hire licensed and certified workers so naturally their selection processes are the same.
They are all in the same industry and industry norms often dictate selection processes.
They are simply using the same type of selection processes that all firms use.
They have the same company culture so they would likely use the same selection methods.