The reason that people "don't see x" is that they're seeing 'y'.
They "just don't think" whatever it is we think they ought to be thinking; they "don't even think about" whatever aspect of things we consider most urgent, obvious, and clearly illuminating -- because they're too busy thinking something else about other things entirely.
Your ideas, even my ideas, could be wonderfully helpful to a great many people.
They don't want them. They have theirs.
And look how well we're all doing!