The supply of executive and management workers is constrained by the intimate trust that can be formed with the individuals. I'm not sure that scales with the total workforce. Much like friendship, I suspect that the average person has no more friends with 7B people on earth than an average person had when there were 2B people on earth. There are just practical limitations to the number of people that you can build that kind of relationship with. It is not like a line worker where the job is implemented such that almost anyone can walk into the job as a 'replaceable cog'.
The supply of executive and management workers is constrained by the intimate trust that can be formed with the individuals. I'm not sure that scales with the total workforce. Much like friendship, I suspect that the average person has no more friends with 7B people on earth than an average person had when there were 2B people on earth. There are just practical limitations to the number of people that you can build that kind of relationship with. It is not like a line worker where the job is implemented such that almost anyone can walk into the job as a 'replaceable cog'.