Yes, the lack of nintendo published FPS games on the Wii is totally to do with the expanded audience
http://vgchartz.com/games/index.php?name=&console=NES®ion=All&developer=&publisher=245&genre=FPS&keyword=&boxart=Both&results=50&order=Hits
http://vgchartz.com/games/index.php?name=&console=SNES®ion=All&developer=&publisher=245&genre=FPS&keyword=&boxart=Both&results=50&order=Hits
http://vgchartz.com/games/index.php?name=&console=N64®ion=All&developer=&publisher=245&genre=FPS&keyword=&boxart=Both&results=50&order=Hits
http://vgchartz.com/games/index.php?name=&console=GC®ion=All&developer=&publisher=245&genre=FPS&keyword=&boxart=Both&results=50&order=Hits







