Grands patrons: La Fin d'un monde is a French nonfiction essay examining the role and changing status of major corporate leaders in early twenty-first-century business life. Drawing on Frédéric Lemaître's journalistic background, the work considers how executives, business institutions, and economic conditions were being reshaped during a period of heightened scrutiny of corporate power. Its focus is on the world of large enterprises and the people who direct them, asking how leadership, responsibility, and public perception evolved as older certainties surrounding major employers and industrial decision-makers came under pressure. Written for readers interested in contemporary business culture and economic debate, the book offers a concise analytical look at the end of a particular model of corporate authority rather than a narrative history of individual companies.