The reasoning is simple: Instead of seeing Google as rising as a new kind of ruler, enforcing a new kind of authority, I think it's more appropriate to see it

The reasoning is simple: Instead of seeing Google as rising as a new kind of ruler, enforcing a new kind of authority, I think it's more appropriate to see it as grafting itself onto an already existing authority. So to me it's not clear cut whether the centralizing power Google brings with its resources overweights the decentralizing power from dividing such authority into more parts. And as an aside it also seems foolish to worry about this when said political system itself guarantees that the majority of the population can't be properly represented unless they agree with each other, which is precisely the problem media control solves.