 Arguments for intellectual property rights have generally taken one of three forms (Hughes 1988; Moore 2008). Personality theorists maintain that intellectual property is an extension of individual personality. Utilitarians ground intellectual property rights in social progress and incentives to innovate. Lockeans argue that rights are justified in relation to labor and merit. To this we add a recent fourth strand of justification (Moore 2018). This more recent justification analyzes content creation and access as a form of the prisoner’s dilemma. On grounds of prudence and self-interest, we each have reason to adopt and promote institutions that protect intellectual works. While each of these strands of justification has its weaknesses, there are also strengths unique to each.