I disagree. I point to the Apple iTunes Store as a counter example. It has been getting money for digital content on a per-copy basis for nearly six years, with continual growth in sales.
Meanwhile, nearly all those music stores based on a subscription model have collapsed.
Originally Posted by Format C:
A publisher who sells digital goods with a "per copy" pricing model is a loser.
He needs a law to force the market to adapt to his business model - and he has got it -, but he can't last long. Sooner or later he'll collapse.
It's not a matter of price. A digital copy is nothing, and you can't get money for nothing for a long time.