Isn't this what everyone wanted anyways?
We always complain about shovelware selling well and crowding the shelves, but complain when retailers do moves like these. With less shovelware, there will be a greater opportunity for the games we all overhype on the internet (Madworld, No More Heroes 2, etc.) to get some more exposure.
Also, this is really only two retailers, so it doesn't indicate a trend to me (that article has a misleading title). They're not even the biggest videogame sellers. This generation is very peculiar for many reasons. In previous generations, the market leader got lots of shovelware (this is not anything exclusive to the Wii), but developers would also see that it was worth making great games for the market leading console to be a cut above the rest of the other third parties (Grand Theft Auto III on the Playstation 2 is a perfect example of this). Unfortunately, the Wii is still seen as a great way to sell the industry's shovelware, and most of the talented developers and studios work primarily on the HD consoles. I don't see this changing for the rest of the generation, and I only hope that the next Nintendo console will be like the SNES and get developers on Nintendo's side.