--OkeyDokey-- on 06 September 2010
I think you have to look at the term "mega franchise" relative to genre. God of War, for example, is definitely the mega franchise of its genre. GoW III has sold in a few months what it took its closest competitor (DMC) a lifetime to sell. And its design is used as a template for other games in the genre (Dante's Inferno, Castlevania: Lord of Shadows).
So Sony has the racing sim and hack 'n' slash audience on lock, but they've failed to capture the markets for FPS (Resistance, Killzone, MAG), TPS (SOCOM, Uncharted) arcade racing (ModNation, Motorstorm), 2D platforming (LBP), 3D platforming (Jak, Ratchet, Sly), action-adventure (Ico), sandbox (inFamous) etc.
