Nice article, but you completely ignored Ogg Vorbis.
Also, no DRM is better than many DRM formats, and only one format is worse. DVDs had one protection standard because of their limited hardware and because users weren't yet aware of the DRM. DVD's protection has been cracked, but people still buy DVDs. With audio, the hardware can do more and there are competing companies (thus competing standards). Even if there were only one standard, people are painfully aware of DRM, so it will never become very popular. You have the power to realize that just like with DVDs, selling music with effectively no DRM will work - advocate that! Don't advocate removing market forces from the equation that chooses which DRM format honest users will use, when they would otherwise choose the lesser of several evils, or maybe even none of them.