The product of an individual's intellectual endeavour is the property of that individual, who deserves to profit from it  Every individual deserves to profit from his creative endeavours, and this is secured through the application of intellectual property rights. When an individual mixes his labour with capital or other resources, part of him inheres in the product that arises from his effort. This is the origin of property rights. Property rights are an unquestioned mainstay of life in all developed countries, and are an essential prerequisite for stable markets to develop and function. [1] Intellectual property rights are protected by law in much the same way as more conventional physical property, as well it should be. Individuals generating ideas and using their effort to produce an intangible good, be it a new invention, piece of replicable art, etc. have a property right on those ideas and the products that arise from them. It is the effort to produce a real good, albeit an intangible one, that marks the difference between an idea in someone's head that he does not act up, and intellectual property. Developing new inventions, songs, and brands are all very intensive endeavours, taking time, energy, and often a considerable amount of financial investment. People and firms deserve as a matter of principle to benefit from the products of the effort of creation. For this reason, stealing intellectual property is the same as stealing an actual physical product. Each is a real thing, even if one can be touched while the other is intangible in a physical sense. Often the product of intellect is the source of income of an individual; the musician who is too old to play any longer, for example, may rely entirely upon revenues generated by their intellectual property rights to survive. As a matter of principle, property rights can be assigned to intangible assets like intellectual property, and in practice they are a necessity to many people's livelihood.  [1] Fitzgerald, Brian and Anne Fitzgerald. 2004. Intellectual Property: In Principle. Melbourne: Lawbook Company.