Itinéraires Podcast by ACL — “How Do You Become an Entrepreneur?” series · December 12, 2025 · 44-minute episode
The “Itinéraires by ACL” podcast welcomes Thibault Lamarque, founder and president of Castalie, for an episode dedicated to his entrepreneurial journey. The conversation traces his path—from the influences of his youth to the founding of Castalie—centered on the series’ overarching theme: How does one become an entrepreneur? A portrait focused on his personal journey and his relationship with failure.
Key takeaways
- The episode traces Thibault Lamarque’s journey, from his studies at Dauphine to the start of his career at Veolia and then AlterEco—experiences described as having sharpened his environmental awareness.
- He looks back on the founding of Castalie 2011, with the goal of replacing plastic bottles with microfiltered water dispensers for hotels, restaurants, and businesses.
- More than ten years after its launch, Castalie , as of the date of the episode, to have prevented the use of more than 350 million plastic bottles.
- The interview explores how Thibault Lamarque balances environmental commitment with economic performance, as well as the influences that shaped his youth.
- In keeping with the theme of the “Itinéraires” series, this discussion explores the relationship with failure as a step along the entrepreneurial journey, as the episode’s title illustrates.
Source: Itinéraires by ACL, “How Does One Become an Entrepreneur?” series, episode from December 12, 2025 (44 min). Listen to the original episode
