He's downplaying the "social change" aspect. For many, open source/free software has a political element, at least implicitly. That element is strongly opposed to aggressive centralization of capital and surveillance power. You can point out how different licenses were always written in a way that permitted monetization/for-profit use, but that's beside the point -- the people who chose those licenses never imagined that their code would be used at this scale for this kind of purpose.