Oh man, I love it when EFF gets philosophical: "DRM gets made over the course of years, by skilled engineers, at a cost of millions of dollars. It gets broken in days, by teenagers, with hobbyist equipment. That's not because the DRM-makers are stupid, it's because they're doing something stupid.”
(Also this is a terrifyingly good article: https://www.eff.org/deeplinks/2017/10/drms-dead-canary-how-we-just-lost-web-what-we-learned-it-and-what-we-need-do-next)