That's not the definition of network effect, end of story. Look it up. You can't use precisely defined economic concepts willy-nilly. By that standard Amazon

That's not the definition of network effect, end of story. Look it up. You can't use precisely defined economic concepts willy-nilly. By that standard Amazon has network effects because the more products I can buy there the happier I am to shop there (Amazon side) and also the same goes for the other side, because the more customers it has the happier it is. Only problem is that's not the definition of the word we're arguing about.