I think the concept of "centralizing¹ technology" doesn't get enough attention. Technology that by its structure must centralize the social power on which it rests. Nuclear energy is a centralizing technology, because reactors are big, expensive and dangerous. Everyone's least favorite computing trend of the past five years is another one, because of all the size of the datasets that must be ingested to kickstart it.
(¹: read centralizing as an adjective here)