In 2004, I floated the idea of creating a digital commons with public service broadcasters as the central hub in an online public space that would combine the holdings and expertise of established public cultural institutions with the energy and creativity of grassroots activity on the internet. The virtual monopoly control of the popular internet now exercised by a handful of giant commercial companies (the digital majors) renders this ambition more relevant than ever for the future of public culture and democratic life. Realising it under current conditions requires interventions that reach beyond the organisation of collaboration and co-creation to engage with the environmental damage and social exploitation embedded in the infrastructures and devices that support these activities. This chapter underlines the renewed urgency of building a digital commons, reviews barriers to its realisation, and details persistent and emerging issues that must be engaged.