On centralization ring-fencing decentralization

Centralization around the edges can take the teeth out of decentralization in the center. Well, if that isn't a confusing sentence then I don't know what is. In this video I dig a bit deeper into two opposing tendencies within the human psyche - moving towards centralization, and moving towards decentralization. There are advantages and disadvantages to both. Furthermore, localized decentralization can give the illusion of control in what ultimately remains a centralized system. What, for example, is the use of "being in control of your data" (whatever that may mean) if you have no community in which to control it? Similarly, what is the point of owning digital assets if there is no wider system where those assets have practical value?