A scholarly and far more rigorous argument against copyright and patents can be found in Against Intellectual Monopoly by economists Michele Boldrin and David K. Levine. "We show through theory and example that intellectual monopoly is not necessary for innovation and as a practical matter is damaging to growth, prosperity and liberty."

It's a published book you can buy in hard copy (I bought the ebook on Kindle) but practicing what they preach it's freely available online, http://dklevine.com/general/intellectual/againstfinal.htm