I think the most prevalent part that futurists missed (not all of them, going back to the invention of printing presses) is the decline of human functionality in our own futures. In other words, the more "useful" things (patent office terminology) we build and distribute, the less we need humans to be useful about. Rather than freeing our time to create beauty and help Nature provide for all creatures going forward, we keep looking back at scarcity and competition as the overarching themes of human actions. Futurists try to extrapolate from 'civilized' fanatical competition and perpetual growth toward some future, as though we could extrapolate a baby chicken's growth rate from its first 12 weeks of life and insist that chickens should all become 100 feet tall. Our economics and desires are those of a toddler species throwing tantrums (wars, government shutdowns) and demanding to trade places at the table with the grown-up (Nature). We have to earn our place at the Sustainable Species table before the cafeteria closes for good, and it doesn't look like we'll ever choose to do so.