The Wii and the DS are virtually a license to print money.And the DS and gameboy before was praticaly like printing money.
However, the amount of shovelware on both systems... Ai-yi-yi.
It's nice that Nintendo has gotten the third parties back on board, developing for their systems. But Nintendo has confused quantity for quality; most of what's available on the system from third parties can be charitably described as "crap."
"Quantity has a quality all its own", esp when quantity is money.