People just try to rationalize their behavior and play silly word games because they're attempting to avoid the simple fact that piracy is robbing other people of their labour.
Kant gave us a good principle, universalizability. If everyone pirated, creators would not get compensated, therefore they could not sustain themselves and it would be obvious that the value of their work is being stolen. Evidently, pirates are free-riders and their theft just isn't evident because enough people usually compensate for it.