YouTube 1, everyone else 0
YouTube is the master of both direct and indirect network effects. Take a look…
spotify
Spotify’s Business Model – Competing With Network Effects
Spotify leveraged network effects to gain a massive user base, and amass (almost) the entirety of the world's popular music collection. Now the company is seeking to capture value from its users, which as it turns out are the ones that pay $9.99 per month for a premium subscription. But the incentive system between the company and its users is broken.