@businessfox Take a look at who Naughty Dog is owned by.
Evil Nazi German Shepherds that control most of the major cities. They are minority owners with Sony, got it off the Wikipedia page.
@businessfox Because Naughty Dog is a Playstation internal studio. Ever notice how Crash Bandicoot and Uncharted were also PS3 exclusives? Sony wants you to buy their console, one way to make that happen is to make exclusive games.