Any of this could easily be wrong and I'm by no means an historian or political theorist but I'm in the middle of a book called Absolutism and its Discontents and it's made me a little hesitant to draw too many parallels between medieval feudalism and modern/future corporate serfdom
Feudal Europe, as I understand, was stabilized by the material independence of agrarian enclaves from one another, as well as an absence (in the wretched majority at least) of any conception of politics or a state or secular power over and above the will of the king or the local nobility, with the latter much more relevant to most people
Although there seems to be much controversy among historians I have the impression many agree that the simultaneous (and often antipathetic) rise of absolutism and markets created the series of crises which brought the end of feudalism, and although absolutism is mostly gone, markets are now ubiquitous
Even if supply chains and communications networks fragment I'm not sure the feudalism of old bears much on the modern day unless we lose nearly all the technology developed in the last 500 years
I don't think that's worth noting at all. After all, we could also say the same about hunter gatherer communities, the Assyrian empire, the Egyptian empire, the Roman empire, etc...
But anyway, way things are going libertarians and conservatives will get their dreamt feudalism.