As always, when this kind of things come up, I'd like to mention "Of Flying Cars and the Declining Rate of Profit" (2012), by the late David Graeber. There's a reason late 20th and early 21st century technological development went the way it did, rather than the way it looked like it would from the mid 20th century.

https://thebaffler.com/salvos/of-flying-cars-and-the-declini...