I would argue that YT's network effect is producers, consumers, and content, which are in a feedback loop: Users default to youtube, because it has the most con

I would argue that YT's network effect is producers, consumers, and content, which are in a feedback loop: Users default to youtube, because it has the most content. It has the most content because producers upload there. Producers upload there because it's where the users are. You can spend money on either the producer or consumer side, but it doesn't break the cycle.