Owning the Intangible: Can Classical Property Theories Survive the Digital Turn?

Imagine a world where the most valuable things you own cannot be touched, held, or stored in a safe. You cannot lock them in a box or hide them under a mattress. These are digital goods: the personal data you generate when you search the web, the virtual items you buy in a game, and the files you create on a computer. For centuries, human societies have built laws and moral rules around physical objects, like land, tools, or furniture. These rules assume that if you own something, someone else cannot use it at the same time, and that if you copy it, the original might get damaged or disappear. But digital things break these old rules. They can be copied perfectly and instantly without losing the original, and many people can use the same digital file at the exact same time without getting in each other's way. This creates a deep puzzle for philosophers and legal experts: how do you apply centuries-old ideas about ownership to things that are invisible, endless, and shared?

A researcher named Vincent Robert Kraft from Witten/Herdecke University has taken a close look at this problem. He asked whether the famous theories of property that humans have relied on for hundreds of years can survive the shift into the digital age. To find the answer, he did not invent a new theory from scratch. Instead, he acted like a judge reviewing four different legal arguments, each coming from a major school of thought in philosophy. He tested them against a specific set of requirements. A good theory, he decided, must be able to explain why we should own things in the first place. It must clearly define where an owner's rights stop and where other people's rights begin. It must be able to say exactly who owns a specific digital item, or if no one owns it at all. Most importantly, it must be flexible enough to handle new kinds of goods that did not exist when these theories were first written, while still making sense to ordinary people.

The first group of ideas he examined is known as utilitarianism. This approach judges property rules based on the results they produce for society. If a rule about owning data makes everyone happier or the economy work better, then that rule is good. If it causes more pain or waste, it is bad. Kraft found that this way of thinking is incredibly flexible. It can easily adjust to any new digital technology because it simply asks, "Does this help people?" However, he also found a major weakness. Because it depends entirely on the specific situation, it cannot give clear, fixed answers. It cannot tell you in advance whether a specific piece of data belongs to a company or a person; it can only say that the answer depends on what creates the most good for the most people at that moment. It is too vague to serve as a solid foundation for a new system of ownership.

Next, he looked at critical or Marxist theories. These ideas focus on fairness and the distribution of wealth. They argue that the most important tools for making things should belong to everyone, not just a few rich people, to prevent exploitation. In the digital world, where data can be copied forever, this theory suggests that everyone should have equal access to information. While this offers a strong moral vision for equality, Kraft found it struggles to fit the reality of digital life. These theories were built for an age of factories and physical labor, where the difference between a worker's tools and a worker's personal items was clear. In the digital world, that line is blurry. A personal computer might be a tool for work and a source of personal expression at the same time. The theory also does not explain well how to handle personal data that is unique to an individual, rather than a shared resource.

The third group is called personality theory. This view sees ownership as a way for people to express who they are. Just as a person needs a body to exist in the physical world, this theory argues they need a sphere of control over objects to express their freedom and develop their personality. This idea fits very well with personal data, which is essentially a digital reflection of a person's life and choices. It suggests that people should have strong rights over their own digital footprints. However, Kraft noted that this theory is less helpful when it comes to deciding who owns things that are not directly tied to a person's identity, or how new digital items are acquired in the first place. It explains why we need ownership, but it is not very clear on how to divide up the world of digital goods.

Finally, Kraft turned to libertarian theories, which are based on the ideas of John Locke and Robert Nozick. These theories start with the idea that every person owns themselves and their own labor. If you mix your work with something that belongs to no one, you make it yours. For example, if you pick an apple from a wild tree, it becomes your property because you used your effort to get it. Kraft found that this approach, while facing some challenges with digital goods, offered the most complete and consistent framework. It provides a clear reason for why we own things, a clear limit on how far those rights go (you cannot hurt others while using what you own), and a method for deciding who owns what. Even though digital data is not a physical object like an apple, the logic of mixing one's effort with a resource still applies. A person who creates a digital file or gathers data through their own work has a strong claim to own it.

After weighing all the options, the study concludes that the libertarian tradition offers the best starting point for understanding property in the digital age. It is the only theory that manages to be both morally strong and practically clear. It can explain why we need ownership, it sets firm boundaries to protect everyone's freedom, and it has the flexibility to stretch over new digital frontiers without breaking. While no single theory can solve every problem created by the digital revolution, the ideas of Locke and Nozick provide the most solid foundation. They allow us to treat digital goods as something we can own and control, while ensuring that our rights to do so do not trample on the rights of others. The digital world is new, but the human need to own the fruits of our labor remains the same.