Interactive fiction is probably a good case study, reflected in many other fields: software is appearing everywhere/mediating everything, but software freedom is not, except as an artifact of free software being used. But ethical concepts, zero signal on other side.

That's largely what my talk earlier this year at lfcollab was about, though overly license-centric: http://gondwanaland.com/i/software-eats-commons-linux-collaboration-summit-2013.pdf