Anton Hemerijck, Mariana Mazzucato and Edoardo Reviglio, in chapter 7, offer an original perspective: the most competitive economies in the EU spend more on social policy and public services than the less successful ones. However, the twenty-first century knowledge economies are ageing societies and require European welfare states to focus as much — if not more — on ex-ante social investment capacitation than on ex-post social security compensation. The growing needs for social services will require new and updated social infrastructure. According to a report on social infrastructure in Europe coordinated by former President of the European Commission Romano Prodi in 2018, the minimal gap is estimated at €100–150 bn per annum and represents a total gap of over 1.5 tn in 2018–2030. Long-term, flexible and efficient investment in education, health and affordable housing is considered essential for the economic growth of the EU, the well-being of its people and a successful move towards upward convergence in the EU. But how do we finance the great new needs with such a pressure on public finances? The chapter suggests innovative financial solutions using institutional and community resources to lower to cost of funding of social infrastructure. One such solution is the creation of a large European Fund for Social Infrastructure, owned by State Investment Banks (SIBs) and institutional long-term investors, which would fund its operations by issuing a European Social Bond. In this endeavour, a central role must be played by the EIB and by State Investment Banks. The authors discuss the potential role of these “mission-oriented” SIBs in social innovation by changing their mission. They should not simply “compensate market failures” but also become institutions that “shape the market” and become major providers of sustainable long-term and patient finance to deliver public value.