To get to an attach ratio at the end of the generation of ten games sold per console, there should at least be twice as many to choose from as each gamer is different.
Let's see if Nintendo can dig up enough First Party games:
Mario Kart, Mario 2D, Mario 3D, Zelda, Metroid, Smash Bros, Mario Party, Donkey Kong, Animal Crossing, Paper Mario, WarioWare, Kirby, Yoshi, Mario & Sonic at the Olympic Games, Pikmin, Mario Golf, Fire Emblem, Pilotwings, Starfox, Luigi's Mansion, Pokemon, Nintendogs, Kid Icarus, Mario Tennis, Golden Sun, Mario Strikers, Art Academy, Style Savvy, Wii Party...
...and even more! That's almost 30 games just there!
Now let's look at Sony:
Gran Turismo, Uncharted, Little Big Planet, Resistance, MotorStorm, Killzone, inFAMOUS, God of War, Ratchet & Clank.
Now let's look at MS:
Halo, Gears, Fable, Forza!
Conclusion! Nintendo is pushing away Third Party because they have too much First Party!
The attachment ratio right now is 5.5 http://www.nintendo.co.jp/ir/en/sales/hard_soft/
