Open Source, Intellectual Property and Licensing Types of software Commercial and Open source, API, From a software cancer to Disruptive Technology "Microsoft: we were wrong about open source. [...] Former Microsoft CEO Steve Ballmer famously branded Linux “a cancer that attaches itself in an intellectual property sense to everything it touches” back in 2001." https://www.theverge.com/2020/5/18/21262103/microsoft-open-source-linux-history-wrong-statement "Economics of Open Source" by Mirko Böhmhttps://academic.oup.com/book/44727/chapter/378967711 "Technology must be not only adopted, but also maintained""Why Did Human History Unfold Differently On Different Continents For The Last 13,000 Years?" by Jared Diamondhttps://www.edge.org/conversation/why-did-human-history-unfold-differently-on-different-continents-for-the-last-13000-years “The Cathedral and the Bazaar” by Eric Steven Raymondhttp://www.catb.org/~esr/writings/cathedral-bazaar/