Your comment highlights the far more unsettling truth -- that a company with a great deal of resources, research and user-feedback still created something that the market rejected.

I deal with this fear by believing that users crave a personal vision. They can get into a product that is foreign to them as long as it represents a singular designed and cohesive flow. They reject 'design by committee' or data-driven designs because they represent the average of what all users want, not what any single user desires.