You specifically equated the "theft" of a song with the theft of a car, but your definition of theft ignores the difference between theft and copyright infringement. These are distinct concepts, legally, historically, and philosophically.
Sorry if I misinterpreted what you were saying, but it sounded like you were arguing that there's a moral force behind copyright and that it rests in its similarity to theft.
I equated them only in the sense that they are both natural human behaviors. You could just as easily replace it with "piracy of a song", and the argument would have been the same.
The choice of words is very important and not trivial in the least. Notice how you just said "piracy of a song", when in fact the copying of a song is not "piracy" which equates to robbery aka theft.
The words we choose are very important when discussing ideas, just ask the republicans who have used this technique for years to sway the public to their side on various social and political matters (death tx vs. estate tax being one example).
Sorry if I misinterpreted what you were saying, but it sounded like you were arguing that there's a moral force behind copyright and that it rests in its similarity to theft.
I'll update my article accordingly.