One way to aim high is to try to make something that people will care about in a hundred years. Not because their opinions matter more than your contemporaries', but because something that still seems good in a hundred years is more likely to be genuinely good.
Human scale institutions strive for optimum scale. Not mega scale. The point at which maximum quality can be attained. Their purpose is not to maximize profitability. It is to maximize well-being. Whose? Everyone’s.