I hear your point, but I think in some ways the network effect is intrinsically linked to the capabilities of the platform, they are kind of like two sides of the same coin. Consider a platform like discord where the quality and capabilities of the software product have allowed many massive communities to be built because of the beautiful design (for its niche) and the empowering community features. Platforms like teamspeak and ventrillo had the network effect but were eventually crushed by discord because of the product's capabilities.