[shrimp_emoji]

>There are plenty of ways. ... have those devices film the user.

I think you've identified pretty much the only way (that I can think of, anyway). If you surveil all consumers and instantly arrest them the moment they make a copy, mission accomplished.

Short of that, though, as long as the data is being presented out in the open (light waves, sound waves, text), it's going to be possible to "rip" it.