It's really hard to design products by focus groups. A lot of times, people don't know what they want until you show it to them. As Henry Ford said many years earlier: "If I had listened to my customers, I would have built a faster horse." Inventions in general express Shannon entropy. They come from the supply side.
Knowledge and Power: The Information Theory of Capitalism and How it is Revolutionizing our World (ed. Regnery Publishing, 2013) - ISBN: 9781621570288