It's a good point. But are there always only two groups, the elite and the majority, or could we create more? It seems to me power works best for everyone when it is more distributed, less uniform, and exists on a gradient from the elites down to the majority. Maybe a government structure could enforce that. For example, instead of just America's, Executive, Legislative and Judicial branches, we might also have additional branches for Education, Finance, Security, Business, etc., each having some (but not always equal) constitutional power over other branches, and all trickling down in power to the majority that has voting rights.
What you're saying is basically boils down to maximizing the complexity (integrated information) of the system. That is possible by increasing differentiation and integration. It is better power to be divided in more fragments, each differentiated from the rest, and then integrated with each other so as to be forced to create a dynamic equilibrium. That's what our brains are doing too, on a scale much more complex.
As reference, the concept of integrated information was developed by Giulio Tononi but I applied it in a different field.