[edwr]

Physical property is zero-sum. If someone else is driving your car, you can't drive it. If you copy my PDF, I still have my PDF and can use it exactly the same. I'm only deprived of a hypothetical profit I could have made by selling that PDF to you (if you would've paid for it).

Imagine I believe that depriving people of hypothetical profits is morally wrong. By the same logic, libraries are stealing from authors by depriving them of potential sales. Peaceful protesters are stealing from retail businesses by obstructing hypothetical sales. Municipal water suppliers are stealing from bottled water companies by depriving hypothetical sales.

My logic wouldn't have internal consistency with societal norms unless I accepted that creative production is somehow unique and special, and warrants special rules to protect hypothetical profits with the threat of lawyers and state-backed violence.

Still, let's assume I agree. There are many scenarios, illegal under intellectual property law, where the author/creator isn't deprived of anything, even a hypothetical profit. Consider that copyright lasts for 70 years after the death of the author. For 70 years, the author isn't deprived of even hypothetical profit, because they're already dead.