I should emphasize that if a license or EULA clearly states what private copying I may and may not perform, then my different theory of rights amounts to them saying, “We’re granting you the rights in set S,” and me saying, “No, I’m granting you the rights in the complement of S.” But either way when it comes down to a particular right and whether I have it or not, we end up agreeing. So I’m not violating any contracts and I do not feel entitled to do so.
The difference only comes into play in two cases: (1) When a contract does not specify whether I have a right or not, or (2) when a law is passed.
A contract generally doesn’t specify anything prohibiting the use of new technologies. Right now my computer has its hard drives in RAID 1 configuration. RAID 1 means it stores two copies of everything, one on each drive, on a sector-by-sector basis. The purpose is to allow for reliability: if either of the two hard drives fails, I don’t lose any data. Both copies are durable. (Theoretically I could take one of the two hard drives out and give it to someone else, but that would be immoral unless I erased it first.) Some of my old software licenses were written before such technology was common. It has been argued that the installation of certain software on my computer might violate licenses, because the license may not explicitly permit that additional copy to be made. But in actual practice, RAID is becoming so common now that if it were to be held a violation of copyright, it would mean suing everyone who uses it and smashing RAID technology out of existence. People wouldn’t want to buy RAID because of the legal liability, and manufacturers would face contributory infringement liability.
A “hybrid” drive, which is basically a regular hard drive with a couple of gigs of flash memory, also stores multiple copies. If I use a program frequently it will be stored on the hard drive but also copied into the flash memory. Flash memory can be rewritten, but it can retain its contents for years without electric power, so it is durable. (If I put two of those in RAID 1 configuration then the system might make as many as four durable copies of a piece of software.) Hybrid drives are sufficiently new that it would not have occurred to software licensors to specify whether or not you can use them.
Businesses have for years made weekly or monthly backups which include proprietary software among the data being backed up. The purpose is not to infringe rights but to ensure reliability. A RAID system still has to be backed up: it is designed to withstand drive failure, but if you erase a file, the file is erased on both drives.
Most of the time software licensors would conclude that it is just “common sense” to allow you to use new technologies as they become available. They really don’t want you to pay for software and then be unable to use it. It seems that the government considers it “pragmatic” to allow such new devices rather than creating a big legal brake with the introduction of each new technology while each software vendor decides whether they want to permit their software to run on it. It is also possible that the vendor might not be around anymore, and there might not be anyone to ask.
One should grow suspicious of “principles” which have to be “pragmatically” compromised on in order to work in reality. In DIM Hypothesis terminology, this is symptomatic of an M1 system. (An M2 system would be unwilling to make that compromise.)
It is possible to achieve the same result with a principled system, simply by saying that, absent any agreement to the contrary, private copying, for oneself, is allowed. Copyright is more practical under such a system, it is more in line with reality, and the moral is the practical.
Also, laws that forbid private copying (for oneself) are violations of rights. They are based on a presumption of guilt, on the theory that if you make a copy for yourself, you are going to give it to someone else. The “stealing” has not occurred until you actually do give away that copy.