But it remains: art and expression is valuable.
Yes I can probably make more money optimizing advertising attribution. But, honestly, I think there's some art in all of us. It's ok to explore it.
Humans are notoriously bad predictors. For example; That fancy menu system you spent a week making might be completely useless to most users, simple user feedback could have prevented the colossal waste of time...
In some cases, if someone has a very highly developed sense of aesthetics and design, or can extrapolate from previous user feedback scenarios, then they might be able to come up with designs that users will love even if users wouldn't have thought of it that way ahead of time, or if more generic feedback would never have collated down into actionable decisions that empowered that particular designer.
As I've gone on in my career, I tend to see the value of this more and more, and lose faith that feedback collection mechanisms won't be politically subverted.
One example: I'd say a lot of the feedback about the principal lines of work for TensorFlow from the recent dev summit is wrong-headed, and they should just let Francois Chollet's design aesthetic motivate what gets worked on and how it gets designed, for a while.
When the idea is just taking form I think getting too many people involved is a mistake. All you need is 2/3 people really invested in the idea. For example: unix
When the idea is near completion I think it's really good to get all the feedback you can.