Wrong claim: "There's an opposing network effect of *keeping customers unmatched, because this provides gossip and entertainment among friends, which gives them a reason to continue using a service."

No, this is implying they are doing it with intention - which they dont even have to insist on! They can keep the users, because matching based on an app does not work for 99.99% real cases. So if you treat them well, they will stay anyway, unless your product is shitty.