Which are ? I remember only Ni no Kuni 2 being a PS4 console exclusive. Honestly most of their succesful catalog has always been on Nintendo consoles (Yokai Watch, Professor Layton and Inazuma Eleven), so I honestly don't see how Sony could manage such a purchase when Nintendo is far more likely to get them if it were ever to happen.
Company accepting purchase have more to do with money offered than they releasing games for that platform before. Rare hadn't a big historic developing for Xbox when they got bought by MS.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"