Matt Asay, John Lennon's lesson for public-domain innovation – IP protection hurting, not helping, US and UK, su theregister.co.uk, 18 Feb 2013. URL consultato il 2 gennaio 2017.
«TechDirt highlights research showing that extending copyrights increases prices and limits dissemination of knowledge, while also pointing out that people who believe patents cause innovation are simply confusing correlation with causation. If anything, patents inhibit innovation.»