I have maintained all along that innovation is easy. Successful innovation is hard. Anyone can invent something new and by definition is that innovation. The challenge is building something new that people want and will pay for. (Poses a related question of whether free products are innovative?)
This is why I love quotes like this:
The test of an innovation is that it creates value.
Is this not the same test for great product management?
Quote Reference: Management Challenges for the 21st Century by Peter F. Drucker (p.86)
More on this book later.