I'll bite. I own 43 PS3 games, 8 Wii games, and 3 XBox 360 games. Some disclaimers: I'm mostly a PSP/PS2/PS3 gamer, and I've only owned the Wii for a year. I'm currently borrowing my friend's 360 while he's in Europe for at least 2 years, and I've had that about four months. He gave me two games for keeps (he didn't want them so I bought him lunch for them) and I bought one I really wanted to play. Here's the breakdown:
PS3 - 43 games total
Sony - 17 games
EA, Bandai Namco, Atlus, and WB Games - 3 games each
Capcom, Ubisoft, Activision, and NISA - 2 games each
THQ, Konami, 2K Games, Take 2, Square-Enix, and Sega - 1 game each
Wii - 8 games total
Nintendo - 5 games
XSEED - 2 games
Bandai Namco - 1 game
XBox 360 - 3 games
2K Games, Bandai Namco, and Capcom - 1 game each
If I had gone into my PS1, PS2, GameCube, PSP, and DS collections, there would be MUCH more representation from Square-Enix and Capcom. But I wanted to stick to the spirit of the topic and do those "big three" consoles of this past generation.
I'm not going to count through my PC collection of games because ffffffff.