But if every dev on PS4 does this, PS4 is left without exclusive competitive MP games while Xbox has Titanfall and Halos and Sunset Overdrives in addition to the CoDs/BFs that PS4 will get.
I can't see this not hurting their dominance in the US that Sony would really like to have this gen. Competitive MP games are the highest selling titles in the US and what the dudebros want to be enticing them to pick up a next-gen system.
If the mindset is that PS4 is a single player console and the XB1 is a social multiplayer gaming console (which is kind of the reputation PS2 and PS3 had), that's going to hurt them badly in the US. Gaming has been multiplayer focused for a decade now, not making sure PS4 is as competitive as the XB1 in multiplayer competitive gaming is a big mistake imo.
I think at some point Sony needed to sit down with one of these teams and give them extra budget, extra staff, and say "we need a MP mode"
Killzone SF was 2013 and the multiplayer did not take off. Sony needs an exclusive AAA competitive multiplayer game by the end of 2014 to compete with Titanfall, Halo and maybe Sunset Overdrive. I seriously hope they have Uncharted, because I don't know what else they can have with Resistance dead, Killzone already released, and their two big TPS games not having multiplayer.
Lets just stop at your first 2 words. But if. That is one mighty big if. I think you can calm down if that is what is worrying you.