There are many sides to developing a product, do you want a Grand Slam or do you want to build more slowly brick by brick.
Tom Evslin talked about his experience with VisiCalc and how it would of never came about by asking people what they want. VisiCalc solved a problem that people never knew they had.
Tom Evslin -
DON’T Ask the Users What They Want!
Seth Godin -
Another brick in the wall 
