The authors investigate the structural relationships among entrepreneurial proclivity, innovation process characteristics (technological strength, marketing strength, and marketing–R&D integration), and customer equity in achieving business growth and financial return in the Japanese context. Following field interviews and a pilot test, survey data are collected from 207 pairs of marketing and R&D executives from strategic business units (SBUs) of large manufacturing companies in Japan. Based on the partial least squares analysis of data, the authors find nuanced effects of organizations' entrepreneurial proclivity on the critical organizational process, resource, and business performance. The study theorizes and empirically supports the idea that customer equity is a potent intermediary outcome that contributes to both top‐line (growth) and the bottom‐line (ROI) of a business. Specifically, the study shows that: (1) entrepreneurial proclivity directly and positively influences technology strength, marketing strength, and marketing‐R&D integration; (2) entrepreneurial proclivity's effect on business growth and financial return is positive and mediated by customer equity; (3) marketing–R&D integration has a moderating effect on the positive impact of technology strength on customer equity; and (4) customer equity is a strong driver of business growth and financial return. There is a dearth of research on entrepreneurship in Asia; very few empirical studies have been reported from Japan in particular. This study contributes to boundary testing of the theoretical relationships. Although entrepreneurial proclivity appears to be an inspirational concept, its actual adoption remains an important question for many Japanese companies. Those Japanese firms that aspire to be entrepreneurial need to be mindful what innovation processes and resources it takes to fulfill the positive influences of entrepreneurship.