Given Sony's situation I think they'd probably just continue to double down on things that are working marvelously for them (Playstation/VR) rather than risking a venture that bombed, especially given the sheer price range Nintendo has largely cornered down at the moment (entry cost almost nothing for 2DS, scaling up to the Switch).
Really, Pokemon and Monster Hunter have done more to maintain Nintendo's reign in the handheld market than anything. I just don't think Sony has much incentive to dabble there, especially when resources can be spent on "sure things" elsewhere.







