You're equating the existence of copyright as a principle/law and the existence of DRM as a technological means of enforcement. They are not the same thing at a

You're equating the existence of copyright as a principle/law and the existence of DRM as a technological means of enforcement. They are not the same thing at all. I could, physically, go drive my car at 100mph past a school, and nothing about the vehicle would prevent it. Everyone would rightly think me a dangerous idiot for doing it, and the police would probably arrest me, and I'd likely go to jail after being found guilty of motoring offences, but none of that requires the car itself to physically intervene. The likelihood of being observed, investigated, convicted and sentenced is, for most people, a sufficient deterrent even if they might otherwise be so cavalier. The strange thing about copyright is that unlike other "minor" crimes, copyright infringement is primarily treated as a civil matter in law. The state typically will not invest significant resources in investigating minor infringements or punishing those who break the law. It is left instead to the rightsholder to protect themselves, yet the legal system typically provides no cost-effective means of doing so, nor does it provide access to the investigative powers that police officers or other government officials would have in connection with many other types of illegal behaviour. The creative industries have fought back with technological measures like DRM and the related laws because, even though we all agree they are deeply flawed, they are also among the few somewhat effective tools that have been left to the legal rightsholders to protect themselves.