> Secondly, all social networks should be required to enable social graph portability — the ability to export your lists of friends from one network to another. Again Instagram is the perfect example: the one-time photo-filtering app launched its network off the back of Twitter by enabling the wholesale import of your Twitter social graph. And, after it was acquired by Facebook, Instagram has only accelerated its growth by continually importing your Facebook network. Today all social networks have long since made this impossible, making it that much more difficult for competitors to arise.
https://stratechery.com/2017/manifestos-and-monopolies/
> Secondly, all social networks should be required to enable social graph portability — the ability to export your lists of friends from one network to another. Again Instagram is the perfect example: the one-time photo-filtering app launched its network off the back of Twitter by enabling the wholesale import of your Twitter social graph. And, after it was acquired by Facebook, Instagram has only accelerated its growth by continually importing your Facebook network. Today all social networks have long since made this impossible, making it that much more difficult for competitors to arise.