When serial entrepreneur Martine Rothblatt (founder of Sirius XM) received her seven-year-old daughter’s diagnosis of Pulmonary Arterial Hypertension (PAH), she created United Therapeutics and developed a drug to save her life. When her daughter later needed a lung transplant, Rothblatt decided to take what she saw as the logical next step: manufacturing organs for transplantation.

Rothblatt’s entrepreneurial career exemplifies a larger debate around the role of the firm in creating solutions for society’s problems. If companies are uniquely good at innovating, what voice should society have in governing the new technologies that firms create?

Harvard Business School professor Debora Spar debates these questions in the case “Martine Rothblatt and United Therapeutics: A Series of Implausible Dreams.” As part of a new first-year MBA course at Harvard Business School, this case examines the central question: what is the social purpose of the firm?