https://archive.org/details/in.ernet.dli.2015.17923/page/n3
The gist being that the capitalist/socialist arguments--the ones we continue to wear into the ground--ceased to describe reality a very long time ago, and that real power is now concentrated in the hands of high-leverage organizational men: technicians, managers, bureaucrats, executives, etc.
I've seen his thesis play out so many times in business--where the owner is terrified of what his top salesman, or best engineer might or might not do. Imagine what would happen to Google if their top search guys just walked out one day. Basically, we have a participant who is technically a wage-laborer, yet has more power than an owner. This is even reflected in the share rights (or lack thereof) for many companies.
Outside of local restaurants and developing countries, long gone are the days of the "bourgeois capitalist"--who knew his business from top to bottom--managing unskilled laborers who were as interchangeable as nuts and bolts.