If you are skeptical about plenitude, consider that even today it’s already here in certain segments of the economy. We can consume all the music and movies we want, on any device at any time, for about twenty dollars a month. We can select from a large collection of ebooks and audio books at a nominal cost. We can read or watch news for free. We can buy and sell stocks for no commission. We can search and access valuable information online that was once artificially made scarce and expensive.