Earlier quoted context omitted.
> Plenty of other communications networks are open, so any network effect of "walled gardens" ought to be attributed to the superiority of the product. So, when people evidently complain that they feel the social pressure to use the walled garden even though they rather wouldn't ... then that ought to be attributed to the superiority of the product? Could you explain your reasoning behind that?
What explanation is necessary? You've laid it out already. It's like saying you feel pressure to drive a gasoline powered car instead of a coal powered one because gasoline is much more convenient. The network effect arises out of superiority over competition. The social pressure is a result of everyone using the same platform, which itself is a testament to the product.
The idea of network effects is that they create a cost simply for individually choosing an uncommon option, after all other costs and benefits have been accounted for. Which would obviously imply that they create an incentive to choose a common option even if it were an inferior choice without the network effect, as long as the benefits of the uncommon option don't exceed the cost caused by the network effect. Which would thus imply that a situation could arise where everyone individually chooses an inferior product. So, if you say that that can't happen, then network effects don't exist, right?