Cory Doctorow's license on his books is explicitly Noncommercial, No derivative. The person I was disagreeing with would disagree even with that permissive license! And it would also go along with my argument, that Cory Doctorow is still retaining rights to demand payment if people make a killing selling his work in other markets or adapting his work. I have no issues with creatives willingly picking which rights they choose and which rights they keep. But you can see even with more permissive licensing, Cory Doctorow is still retaining the most salient and potentially profitable ones for himself.