I don't think I made any such fallacy. I'm simply not convinced by your claim that NN favors competition. In particular, you seem to think Facebook can strike a deal for free with ISPs in a way that a competitor could not. Obviously such a deal is available to both the incumbent and the Challenger, but it's more likely that the incumbent will have the resources to afford it. In this sense, it's merely a matter of resources, and your pro-NN argument could be applied to any industry with a strong incumbent (it's not really about three internet, you just think wealth and success are bad, or something like that anyway). In other words, your argument could be applied to Apple paying for adverts that it's competition couldn't afford.