Listening to users considered harmful?

From Kathy Sierra. She says: True innovation will rarely come from what users say directly. Listening to users considered harmful?
Here´s a quote to get you started on her great post:
'…we still assume that listening to real feedback from real users is the best way to drive new products and services, as well as improve on what we have. But there’s a huge problem with that — people don’t necessarily know how to ask for something they’ve never conceived of! Most people make suggestions based entirely around incremental improvements, looking at what exists and thinking about how it could be better. But that’s quite different from having a vision for something profoundly new.'