If the VR marketplace is going to depend merely on gamers who don't get sick, then you are spot-on - this will be a failed business model. But just as early PC tinkerers couldn't imagine what would be created when it went mainstream, we too lack the imagination to see what people will do with VR. The good news is that we won't have to wait long now that hardware is getting out into the wild. There are MANY applications that don't require moving around or that only require moving around in a small space.