The problem is with social networks that the network itself is the valuable basis. It doesn't really matter if we compare it to last mile or long distance. It's

The problem is with social networks that the network itself is the valuable basis. It doesn't really matter if we compare it to last mile or long distance. It's all about how much coverage you have. If you don't have enough you can't play the game. Even if you get momentum you will be crushed by a full coverage network like Facebook if they can't buy you (see Snap). So giving everyone coverage would solve this problem hence the comparison to AT&T.