Is the Wii a fad? By Don Reisinger of CNET

[Words Of Wisdom]

misterd said:

Let's also not forget simple logic: Nintendo games selling very well is NOT the same as 3Ps selling poorly.

Simple logic: 

Customers have X dollars to spend on games.

If customers spend Y dollars on Nintendo games (1st/2nd party), they do not have Y dollars to spend on 3rd party games.