The Last Real Moat Left in Startups

I think the last existing mode is true network effects, like real network effects. Why does having company A make it easier, better, or more likely for company B to be also, also be part of this network? Why does company B's presence make it easier, better, or more likely for company C to be a part of the network?

Why is each added node in the network making the network better overall, making the network more compelling, making the network more profitable? That you don't see very often, and whenever we see businesses like that, that's when I get super excited. - Welcome to VC Untuber.