The problem is not just closed proprietary systems, but centralization. Usenet is distributed. A server uses store-and-forward and then floods the messages to e

The problem is not just closed proprietary systems, but centralization. Usenet is distributed. A server uses store-and-forward and then floods the messages to everyone else, eventually propagating all messages to everyone. Today it's rarely the case, even some decentralized networks are not as distributed as Usenet. If one doesn't subscribe to a node, it effectively doesn't exist.