Class action suits are great for lawyers. Ideally, you get a class of people with minor or no injuries -- like, say, Nintendo Wii owners. Then you sue Nintendo for providing a safety strap that isn't strong enough. Say there are a million Wii owners in the class, each with $5 in damages. That's a potential $5 million settlement. Take your cut off the top -- $1 to $2 million -- give the named plaintiffs a little something and who cares about the rest?
Nintendo has already announced that it will be providing stronger straps. That part of the lawsuit is a nullity. The vast majority of Wii owners have suffered no damages at all. That's because the vast majority of Wii players know that you DON'T LET GO OF THE CONTROLLER. My four year old is able to follow that instruction. And she's, well, four!
Do baseball bats, tennis rackets, or golf clubs come with wrist straps? No. Are there lawsuits over it. No. (Well, maybe soon.) Why? Because everyone knows you don't throw the bat to hit the ball (except brother Gambly, and that was little league). And everyone knows you don't play video games by throwing the controller.