this article (roughly) says below,
1. Mastodon faces the probrems which get p2p protocols extinct 15 yrs ago.
2. p2p network will be owned by enterprise, because
2-1. legal asymmetry leads services to censoring by (emproyed) human.
2-2. for network growing, each node requires more computing resource up to too large to own by one person.
3. p2p sns will be to shutdown federation, because
3-1. to stop illiegal posts from other nodes.
3-2. to put a brake on growth of network and computing cost.