I don't think Sony needs to, but if I have to choose, I'd say Atlus and other Japanese devs that make those anime RPGs. That could remove a lot of content from Nintendo's hands. Nintendo is already too strong in Japan and those devs could make a difference for Sony in Japan since PS Vita is gone.
God bless You.
My Total Sales prediction for PS4 by the end of 2021: 110m+
When PS4 will hit 100m consoles sold: Before Christmas 2019
There were three ravens sat on a tree / They were as blacke as they might be / The one of them said to his mate, Where shall we our breakfast take?