It seems unrealistic because people would have to make the effort to publish their content on that network to keep it available. Or pay someone else to do so. A

It seems unrealistic because people would have to make the effort to publish their content on that network to keep it available. Or pay someone else to do so. A distributed approach to this is definitely interesting, but it's more technically challenging and it's not a silver bullet. The big problem is how to fund a social network that doesn't rely on selling it's users data, IMO.