As an historical analysis this seems about right. History is not what will determine who controls a multi-party system, however. Those miners need the full

As an historical analysis this seems about right. History is not what will determine who controls a multi-party system, however. Those miners need the full nodes, and the full nodes need the miners. BC users (buyer, sellers, transactors) need both, and both miners and full nodes are worthless without a strong user base. Since there is no centralized, legally or regulatorily established governance mechanism for the whole, who controls BC will be determined by game theory applied to the real circumstances of the various stakeholder groups, and how they behave as groups. I don't know how that turns out, but it is not hard to imagine a scenario where, with mining concentrated in a small number of powerful players' hands, they can have enough authority to change the rules of the game. And that still leaves out the possibility that regulators get involved and exert their authority to change the rules - which may be the most likely outcome of all.