> "Look at all of the other social networks that tried to solve this in the past and failed." FB has a network effect, which a a major reason all those product

> "Look at all of the other social networks that tried to solve this in the past and failed." FB has a network effect, which a a major reason all those products/services get used. However, it's not really fair to imply that FB is 'succeeding' at all the things you listed. If it were, then there'd be little talk of existential threat from things like Instagram/Whatsapp etc...