As expected, Sony really slacking with their output lately. I hope they take a long hard look at their first party studios and try taking a different route.
stop focusing and graphics.
I think they'll disagree for the most part.
Knack was thrown together, Killzone was there to be a debut title, and Infamous was actually good. Driveclub was supposed to release a long time ago. These are all intended release window titles. And when Driveclub does release, it's very likely that PS4 first party retail releases only will pass the 10 million sales mark. That's a lot of profitable titles and nothing to complain about on their end. I'm pretty sure Killzone is the best selling exclusive this generation at this point, and the ones behind it are most likely going to be Infamous, TLOU: Remastered and Titanfall (Xbox One only) in some order. Forza 5 and Ryse have probably sold about as well as Knack. Probably worse, if anything. This is also ignoring that LBP3 is coming shortly, and will likely be a big success.
There is nothing to really complain about from SCE WWS when it comes to these titles and their performance. Whilst they may not have set the review charts alight, it doesn't really matter. It's not like they were expected to. Could they have been better? Sure. Could they have sold more? Sure, but expectations are usually more realistic.
Guerilla is already hard at work on their next generation project, and Sucker Punch have a similar opportunity. It's kind of silly saying SCE needs to look at their direction when both these studios did what others couldn't and provided some content near to launch (games which were succcesful), and now they each have the opportunity to buckle down and focus on their next generation projects. It's difficult to take franchises which have performed okay for several entries and breathe new life into them to make them major hits, and both those studios were somewhat handicapped in that way.
Starting next year, you'll actually have the major SCE studios start releasing their titles. If Naughty Dog, Polyphony, or Santa Monica start suffering, then we can have this conversation.