Why Building a $250 Million Internet Cable Is So Risky

How does anyone make money from a $250 million internet cable that a fishing boat can damage? Nearly all intercontinental data traffic travels through submarine cables buried beneath or resting on the ocean floor. Building one can cost hundreds of millions of dollars. Repairs can take weeks. And selling the capacity doesn't always guarantee a profitable business. So why are Google, Meta, and other technology giants investing in these cables? The answer reveals two very different business models. In this video, Josh breaks down the economics of undersea internet cables: how they're built, why they break, what repairs really cost, how traditional telecom operators made money, what went wrong during the dot-com boom, and why owning a cable can make financial sense even when selling bandwidth doesn't. We also follow two hypothetical companies investing the same $250 million—and discover why the economics can be dramatically different. ⏱️ CHAPTERS 0:00 The $250M Ocean Problem 0:59 What Are Undersea Cables? 2:48 Building a Transatlantic Cable 4:19 Cable Damage & Faults 5:56 The Repair Ship Shortage 7:00 The Economics of Repairs 9:12 The Market Trap 11:15 The Dot-Com Boom & Bust 13:00 Big Tech Buys In 15:04 Company A vs Company B 18:54 Risks That Remain 21:39 Check It Yourself 🌍 EXPLORE THE INTERNET'S UNDERWATER MAP TeleGeography maintains a free interactive map showing submarine internet cables around the world. https://www.submarinecablemap.com Find a cable landing near you, explore its route, and see which companies are involved. 💬 YOUR TURN If you had $250 million to invest, would you build an undersea cable and sell bandwidth—or would you rather own the infrastructure to support your own technology business? Tell me why in the comments. 📚 SOURCES AND FURTHER READING TeleGeography — The Economics of Submarine Cables https://resources.telegeography.com/the-economics-of-submarine-cables TeleGeography — What Happens When Submarine Cables Break https://resources.telegeography.com/what-happens-when-submarine-cables-break Google Cloud — Dunant Subsea Cable https://cloud.google.com/blog/products/infrastructure/googles-dunant-subsea-cable-is-now-ready-for-service/ The $250 million investment comparisons and other modeled financial examples are illustrative, not actual financial results or investment advice. Real cable costs, repair expenses, and returns vary by project. Subscribe to Josh Talks Business for the economics behind the infrastructure, companies, and hidden systems that shape everyday life. #UnderseaCables #BusinessEconomics #InternetInfrastructure #JoshTalksBusiness #HowItWorks