In a nutshell, he suggests that we can avoid power imbalances by ensuring that natural and legitimate imbalances within different 'spheres' do not spill over into other ones. In the context of tech companies, we might have, say, a 'discipline' sphere where managers are in charge, a 'technical' sphere where engineers are in charge, a 'design' sphere with designers in charge, and so on. Being the top engineer doesn't give you the right to overrule a designer on a design question, and being a top manager doesn't give you the right to overrule an engineer on a technical question. If we're dealing with a personal conflict, this falls under the jurisdiction of management, and they should have full authority to resolve it. If we're dealing with a technical debate, that should be resolved by engineers

I don't disagree with the theory, but in practice power would come down to who gets to decide which sphere applies.