If there is no market for it, it will die. There's a bit of arrogance in the idea that you know better and can do things from the "top-down". Getting user feedback doesn't mean replacing your ideas with whatever John Doe thinks he likes, but finding out how your ideas fit (or not) the users' needs.
Before someone starts misquoting, even Apple did user testing, although not in the traditional format; there is no point in building someone that suits nobody.
Before someone starts misquoting, even Apple did user testing, although not in the traditional format; there is no point in building someone that suits nobody.