Creators who are prospering in a the internet and digital economy are learning ways of making a living that do not depend on charging a fee for every digital copy of their work that exists. Cory Doctorow himself is a success story in the digital economy. The geek-chic musician Jonathan Coulton is another. Neither man will ever have the riches of a Stephen King, say, or a Paul McCartney. But do we really want to cripple the distribution of digital copies of all their work with DRM, solely to create the artificial scarcity to give them a chance - and only a chance, mind - at King-like riches?
Today the music industry is dying, mostly because they add little to the success of a musician in a digital world. The physical product the have traditionally depended on for their income - a circular disc of plastic housed inside an annoying plastic case that is too easily broken - holds little intrinsic appeal for most people. Hence the success of downloadable distribution for music - including both legal distribution through iTunes and friends and illicit distribution through bittorrent and peer-to-peer networks.
The book publishing industry is in a lot better shape, solely because the physical product they depend on has a lot more intrinsic appeal for their customers. I, with lots of bookshelves throughout my house, can testify to that myself. As long as people find books pleasing to hold, browse through, or cuddle up with, book publishers will be all right despite the existence of the Kindle and its competitors.
"Experience has proved that some people indeed know everything." -- Russell Baker