From a consequentialist view, private property exists to reward more efficient use of scarce goods. In contrast to scarce goods, files are abstract and infinite; there is no point in being efficient with them as the copying and consumption of files usually carry no cost to anyone.
And? That doesn't mean anything about if it's moral or not, so it's irrelevant. Unless you assume that what makes something moral is "what everyone does", which is in-correct by the definition of "moral".