All Third Parties Publishers are being bought out by the Big 3. Who goes to who?

[Azuren]

SONY: Square Enix, Capcom, From Software, Ubisoft, Insomniac, Activision, Konami, Kojima Productions, Koei Tecmo, Bandai Namco, Nippon Ichi, Level 5

MICROSOFT: EA, Valve

NINTENDO: Sega, Platinum Games

Sony's massive market share, as well as their previous affiliations, score them much of the field. Nintendo's dealings with Platinum Games and Sega earn them both companies, and EA seems like a good fit for MS whereas Valve would stay PC (MS's Territory).