The biggest distinction people usually make between piracy and theft is that the owner doesn't actually lose whatever is being pirated. It's like fire: you can light your own torch from a fire, but that doesn't take away any of the original fire. Now, fixating on that distinction ignores the less direct harm of piracy (namely that it creates a culture of devaluing the pirated products, as well as putting those who put work into creating the stuff at a disadvantage relative to the thieves), so it's not an ideal way to look at the issue, but it's the rationale used nonetheless.
It's about anything.
Since the majority of people would never buy the product they pirated the creators are not at any disadvantage. ---