The Wii was a success the way the pet rock was. They sold a huge number of them but it didn't take long before they were mostly just used as paper weights. It

The Wii was a success the way the pet rock was. They sold a huge number of them but it didn't take long before they were mostly just used as paper weights. It was under powered, had almost no 3rd party support, and wasn't even HD. The OS design was crazy and the store was virtually unusable. The Wii was a huge opportunity for Nintendo but they couldn't adapt to modern game play or sales to take full advantage of it. So perhaps it wasn't a failure but it was a huge disappointment.