If you don't count Astrobot: Rescue Mission (because Team Asobi still exist), which game was the latest success of Sony Japan Studio?I think when Sony shut down their Japan Studio, that pretty much tells you that they don't really care about Japan market anymore....the sad irony is that Japan Studio is the co-developer of Demon's Souls. A few months later Sony bought Blue Point the American studio who remakes Demon's Souls....that's a big middle finger to the Japan Studio team
We could say Bloodborne or The Last Guardian, but those games were primarly developped by extrenal developpers (and the developpment of The Last Guardian was a nightmare).
I absolutely understand why people are disappointed about the disparition of Sony Japan Studio. I think they should create a new first party studio in Japan to compensate this loss. But the last decade for Japan Studio was so terrible that I can understand why Sony don't want to invest on them anymore.