This book outlines the origins of Danish Capitalism and prosperity, from a poor and devastated minor state in the 19th century to a consolidated universal mixed economy welfare state at the end of the 20th century. The book argues that firm-based innovation drove Danish prosperity and redistributive capacity. It is a comprehensive but manageable examination of the institutions and choices that shaped a highly innovative and wealthy nation. The book relies on history and economic theory, presents commonly accepted narratives and theories, and contributes new explanations. Therefore, the book also traces both antecedents and the current state of 20th-century capitalism in Denmark and particular outcomes and critical institutions such as firm age, the labor market, and pension schemes. The book will be of interest to academics in business history and economic policy, as well as policymakers and all those interested in mixed economy studies.