Hmm I think I get where you're going. I've not dug enough into POS to really question that but I'm not sure I can really buy into Bitcoin being just tied to the physical realm. There's still the issue of a few owning the majority of the coins, in combination with a few being the majority minors? Meaning they pretty much control the speed of the network and the fluctuations of the market price?
I can see why POS together with some sort of abstracted democratic system would be less appealing though.