Gudadantza: Copy protection and antipiracy are and were also one of the intentions of any DRM system. Always.
It is a
anti piracy mechanism. All copy protection mechanisms and also DRM are meant to prevent pirating. DRM won't stop you from copying files, they just are unusable on another system without the means to unlock the access.
But let's just assume that it's the other way around and every anti piracy mechanism is a way of DRM.
If we got the original version of a game with it's manual as pdf, should we then complain about DRM being in it if the game at startup would require to type a word from that manual or use a code wheel? Or would we say: "Cool, now THIS is retro!"
Should we complain, if it came with a serial number that is provided to us via text file?
What if the game requires a registry entry automatically created by our installers? I mean ... it still requires it. You can't just copy the installation directory to another computer and play. Shoud we complain about that?
Do we complain about Dark Forces? After all the game requires a ID file on a drive that is specified to be the CD-ROM drive. It's easy to fake that but the check is there. Should we remove this game from GOG because it has DRM? Mind you that this file does not contain any game resources, it's only there to check if the CD is in the drive. Is this DRM? Should we complain?
The main problem is, that the term was defined including a certain type of technology (digital licencing) but then used for all means to achieve the same goal. The goal existed of course already before the term was created.
If we leave the technology out of the discussion, then every game per se DRMed. Because when you buy and when you install, you accept the conditions not to make copies of the game for others. And unless you are a dirty liar and a thief, your promise will keep the game from getting copied (unless someone hacks into your computer). YOU are the copy protection since you are a honest person who sticks to his or her word.