When you look at sales of PS4 first party, non-port games it's clear that the star power isn't there for third party success. This isn't Nintendo. The majority of PS4 sales go to average COD and Madden gamers, not people like us who play Bloodborne etc. That's always been the case for Playstation consoles. Sony's success comes from their ability to be the third party console of choice. So going third party? Doesn't make sense and would certainly be their downfall.