Videogame publishers used to have it right, particularly Sony. The PlayStation and PlayStation 2 each had one hardware SKU (stock keeping unit, lingo for "model"), and both dominated the console hardware market for years.
Now the PS3 is on its fourth version after barely a year on the market. The Xbox 360 also released its fourth version (five, if you count the limited edition Halo 3 model) since its introduction into the video-game marketplace two years ago. Enough is enough, already!
Nintendo seems to get it. The Wii is leading the videogame hardware market with one console SKU: when you buy a Wii, you buy a Wii, period. Consumers understand the Wii, and more importantly, so do parents and older adults, two groups that are propelling Nintendo's explosive growth in the casual games market.