Might sound stupid, but 30 years ago, the concept of the internet didn't exist and it was created out of 100% whole cloth. It seems completely ridiculous, but there is no reason that another "internet" couldn't be created, seeing as how the real estate in cyberspace is infinite. Far fetched? Maybe. E-Rome wasn't built in a day.
All systems inevitably centralize. Doesn't matter what they are.
RATATATATATATATATATATABLAM
If there's nothing wrong with having to show an ID to buy a gun, there's nothing wrong with having to show an ID to vote.