It’s not clear we can solve the nuanced issues of centralization by pushing for “re-decentralization” of publishing online. Most people do not want to run their own web servers or social network nodes. They want to engage through friendlier platforms, and these will be constrained by the same forces that drive consolidation today.
A better strategy would be to pursue policies that strengthen the environment for decentralized platforms, including data portability, interoperability, and alternatives to advertising-based funding models. For instance, if users have more control of their data, they’ll be more willing to experiment with new platforms.
Decentralized web advocates have good intentions, but there’s no silver-bullet technical solution for the challenges that lie ahead.