Sony gets plenty of third party support. What's wrong with Nintendo getting even 2-3 franchises? Seriously Sony fans need to stop acting like spoiled children.
If the logic is that Sony "deserves" the games because of marketshare, well then Nintendo trounces Sony for handheld marketshare and Monster Hunter is basically a handheld franchise ... so Nintendo "deserves" to have Monster Hunter. If Sony wants it they can try not having anemic handheld marketshare for one.
IMO in the long term Nintendo will take back Dragon Quest too with their Fusion platform which will dominate Japan much moreso than the PS4 (pathetic start in Japan) will. Japan already voted with their wallets -- they don't care for home consoles alone anymore, and in the next 2 years you will start to see portable devices with horsepower to match a PS3/360/Wii U ... when that happens, it over for Japan's console industry.