Nanotechnologies in manufacturing will be in widespread use and rearrange economic systems and product costs

Ray Kurzweil : futurist
By the late 2020s, nanotech-based manufacturing will be in widespread use, radically altering the economy as all sorts of products can suddenly be produced for a fraction of their traditional-manufacture costs. The true cost of any product will be the amount it would take to download the design schematics.

Kurzweil, Ray. 2005. The singularity is near: when humans transcend biology. New York: Viking.