True, it's likely a bug from either the disc or the player but if they weren't attempting DRM I wouldn't have the issue. Inconveniencing legitimate users because you can't implement the protections without it breaking isn't the way to go.

I know I can download a copy of a film, push play/pause and it will just work. I know if I buy a dvd I'll have to sit through unskippable piracy messages and ads and not be sure the film will play after pausing.

How do you know that without a doubt it isn't just a bug in the software unrelated to whether or not DRM was implemented?

because when I do the same on a non DRM disc it doesn't happen

> It sounds more like a bug or fault rather than DRM.

Even if it isn't the DRM, it still is. Because the player could be open and someone could fix the bug if it weren't for the DRM.

Even if it's not the DRM fault here there are plenty of other examples. E.g. You can't copy/backup a DVD on your computer/stick/cloud so once the DVD format is deprecated(i.e. Macs no longer have a DVD-drive) or the DVD is lost you can't play it anymore. Not to mention the convenience. The latest wonder from the DRM promoters is the HDCP: People with 4K TVs can't play 4K TV content anymore because of this new "feature"[0]. Apparently the only sane solution is to hack the HDMI cable.

[0] http://www.howtogeek.com/208917/htg-explains-how-hdcp-breaks...