What you guys seem to be describing is "Freenet", but that project has been around forever and relatively obscure. These days, unfortunately, I wouldn't touch it with a 10ft pole due to safety concerns.

https://en.wikipedia.org/wiki/Freenet

"Freenet is a peer-to-peer platform for censorship-resistant, anonymous communication. It uses a decentralized distributed data store to keep and deliver information"

From what I remember, it basically takes content and distributes "anonymous" and encrypted chunks of it across various members on the network. Content stays active by being replicated, and replication happens proportionally based on popularity. So content that never gets used basically disappears.