I did not notice any change since DRM was implemented for movies, piracy was illegal before and piracy is not much harder with DRMed videos, you can watch Game of Thrones immediately as it is released. Maybe you think is harder now but is easy to pirate and easy to find the pirated content with google, then click play and done.
If you have time I recommend reading gog.com page on wikipedia and also find the interviews with CD Project Red devs about DRM.
And then there are publishers that experiment with DRM. I distincrly remember one older case where the add-on to a game that contained copy protection sold more copies than the base game without protection. How do you explain that?
