[LnxPrgr3]

The existence of Popcorn Time serves as a pretty strong counter-example to the argument that DRM protects IP rights.

I have, however, had technical difficulty playing a movie I legally purchased through iTunes thanks to HDCP deciding it wanted the day off.

Another minor complaint: I want to run my movies through an audio filter I developed to improve stereo imaging on headphones, but I can't really do that with DRM'd content. (Annoyingly, attempting to open a Fairplay-protected item with an AVPlayer object on OS X 10.9 causes the process to be sent SIGKILL.)

Not that I think this justifies piracy, but I do think DRM is a lame non-solution that punishes paying customers while piracy continues to run rampant in spite of it.