Mathew Ingram of Fortune has an opinion piece responding to Pandora CEO Brian McAndrews (pictured), who was interviewed by Business Insider about the future of free streaming services. The takeaway from McAndrews was the free model, now that there are so many participants, is bad because it creates a "grey market" in which people can listen to music forever without paying. Of course, that's exactly how Pandora was built when it was the only player in town. Ingram says times have certainly changed and so is the Pandora business model.