"chintz".
Also, it's a very good reason, because bringing down the cost of the system and having games that are actually fun is what has made Wii the best selling and most sought after system this generation. So really what the heck are you talking about?
And silverstarman, have you ever seen Dreamcast games? They're not bad for a 9-year old system, but Wii most definitely has greater capabilities. As for Saturn, its ridiculous amount of processors actually made it harder to program for. As for Panzer Dragoon, while it may be the Saturn's best title graphically, it is not more advanced than N64's most graphically advanced titles, so your pronouncement is entirely incorrect. As for PSX graphics, when pushed to the limit, they still look distinctly like junk.
Where I work we had more used copies of Halo 3 sold back to us within the first week or two than any other game in recent memory. And it is seriously not "making" the 360.