I believe 'fleecing' would add to the $M cost, making piracy look that much more attractive, and region-locking would most assuredly fall under (and add heavily

I believe 'fleecing' would add to the $M cost, making piracy look that much more attractive, and region-locking would most assuredly fall under (and add heavily to) the $P costs as described in the article, as would pretty much all DRM.