Yes, but the Wii is an outlier. Nintendo gambled and it payed off. Not only that but Motion Gaming was tried and had failed in the past there was no way Nintendo could've predicted its success, and they have failed thus far to replicate that in the Wii U, which is otherwise just following the trend.
You can also determine that the difference in the attach rate between the GameCube and the Wii was indicative of a drastic userbase change.
In other words, the only thing we learned from the Wii was that the mainstream casual market is the gold at the end of the rainbow, but fads are as illusive as Leprechauns.
In this day and age, with the Internet, ignorance is a choice! And they're still choosing Ignorance! - Dr. Filthy Frank