The idea of selling copies of information is very basically broken. Half the time stuff is made but undersells copies because the producer did not find out no-one wanted it, and the other half, people are prevented from realising value that could actually be freely available.
Such a structure consumes a scarce resource -- creative effort -- wastefully, and restricts an abundant resource -- communicability of information -- unnecessarily. That seems very much the opposite of economically efficient.
Information goods should be more like better kinds of software production. But the current copyright-based system makes it all more like a 'waterfall economy'