Customer-driven innovation means I have to find people who will give me money first, and then make a product to sell so I can take their money.
The problem is that I don't know anybody who will give money to me for any reason, even though I have plenty of friends. We're all too busy just trying to pay for food and shelter. I think that rich people can easily start companies because they have rich friends who will pay them. So the only products that get made are things that benefit rich people, not poor people.