You say "network effect" like it's a bad thing. The internet is valuable because it lets anyone talk to anyone. The distributed web is not valuable (today) because it lets nobody talk to nobody.
"Metcalfe's law states that the value of a telecommunications network is proportional to the square of the number of connected users of the system (n^2)."
Networks are valuable because they're winner takes all. One winner-takes-all dweb is superlinearly more valuable than 50 competing dwebs. That's why messaging networks end up federated.