Journal's got reputation, so everybody reads it, and everybody tries to publish in it, so journal gets many good submissions that help maintain its reputation.
New open publication journal gets no reputation, so nobody reads it, and nobody submits to it, so it gets nothing, and can't ramp up its reputation.
I disagree. The two are related, but not synonymous.
The classic network effect example is the telephone - the system is is of zero utility if no-one you know uses the system.
Reputation effects are more decoupled and fuzzy. A tiny niche journal with small readership can nonetheless have a high reputation if it only publishes highly regarded articles.
New open publication journal gets no reputation, so nobody reads it, and nobody submits to it, so it gets nothing, and can't ramp up its reputation.
Network effect.