Samanth Subramanian on the Undersea Cables That Keep the Internet Alive
Samanth Subramanian on the Undersea Cables That Keep the Internet Alive
2 hours agoOdd LotsBloomberg
Podcast42 min 4 sec
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Note: AI-generated summary based on third-party content. Not financial advice. Read more.
Quick Insights

Investors should prioritize Big Tech "hyperscalers" like Google (GOOGL), Meta (META), Amazon (AMZN), and Microsoft (MSFT), as their ownership of two-thirds of new undersea cables creates a massive infrastructure moat and reduces long-term operational costs. The AI boom is driving a multi-year infrastructure supercycle, making the physical capacity of fiber optic lines a critical, non-negotiable component for global data transmission and model training. Look for specialized subsea hardware and service providers with high pricing power, as manufacturing bottlenecks and a limited global fleet of repair ships create significant supply chain constraints. Be mindful of geopolitical risks in "choke points" like the Red Sea and Egypt, which are driving a necessary but expensive wave of investment in redundant "alternative routes" to bypass potential sabotage. Monitor the growing bifurcation between U.S. and Chinese cable networks, as this split will dictate global data flows and influence which emerging markets receive high-speed connectivity.

Detailed Analysis

Big Tech "Hyperscalers" (GOOGL, META, AMZN, MSFT)

The landscape of undersea cable ownership has shifted from state-owned consortiums to private investors, and now to dominant technology giants.

  • Ownership Dominance: Approximately two out of every three new undersea cables are now funded and owned (in part or in full) by Google (GOOGL), Meta (META), Amazon (AMZN), and Microsoft (MSFT).
  • Strategic Rationale: These companies view data as their primary lifeblood. Owning the physical infrastructure (the "tubes") ensures reliability and lower long-term costs compared to leasing bandwidth from third parties.
  • The "2Africa" Project: Mentioned as the longest cable in the world, funded almost entirely by Meta, aimed at connecting the African continent.

Takeaways

  • Infrastructure Moats: Investors should view these subsea investments as massive "moats." By owning the physical layer of the internet, Big Tech reduces dependency on telecom carriers and gains more control over global data flows.
  • Leverage over Emerging Markets: These companies now hold significant geopolitical leverage, as they essentially decide which developing nations get high-speed connectivity based on where they choose to "land" their cables.

AI & Data Centers (Investment Theme)

The explosion of Artificial Intelligence is acting as a massive catalyst for a new cycle of undersea cable construction.

  • End of the "Glut": A few years ago, the industry feared a surplus of cable capacity. The AI boom has completely reversed this, creating a renewed "thirst" for data transmission.
  • Training vs. Inference: As AI models require massive amounts of training data often stored in disparate global data centers, the physical "pipes" connecting these centers must be upgraded.
  • Cyclical Nature: Cable laying follows the global economy. While AI is a secular tailwind, high interest rates or recessions can cause temporary "stasis" in projects due to the high cost of specialized cable-laying ships and materials.

Takeaways

  • Capacity Demand: The "AI trade" isn't just about chips (Nvidia) or software; it is fundamentally dependent on the physical capacity of fiber optic lines to move massive datasets across oceans.
  • Infrastructure Supercycle: We are likely entering a multi-year capex cycle where tech giants will spend billions on subsea hardware to prevent data bottlenecks.

Subsea Communication Hardware & Services (Sector)

The technical process of laying and repairing cables remains surprisingly "old school" and specialized, creating significant bottlenecks.

  • Manufacturing Bottlenecks: Only a handful of companies globally possess the technological capacity to produce high-purity glass fiber optic cables.
  • Specialized Software: There is reportedly one company in the entire world that produces the specific software used by cable-laying ships to determine the precise path and speed required to prevent cable snaps.
  • Maintenance & Repair: Roughly 100 cable cuts occur annually (mostly due to fishing anchors or geological events). This creates a constant demand for specialized repair ships and "clean room" labs at sea.

Takeaways

  • Supply Chain Constraints: The limited number of players capable of manufacturing and laying these cables suggests that any surge in demand (like the current AI boom) will lead to long lead times and high pricing power for specialized contractors.
  • Key Ticker Mentioned: Huawei (via HMN Tech) was noted as a major Chinese competitor, though it is currently hampered by international sanctions.

Geopolitical Risk & "Gray Zone" Warfare

Undersea cables are increasingly viewed as "choke points" for national security and economic stability.

  • Bifurcation of the Internet: There is a growing risk of a "split" internet. The U.S. has blocked several cable projects involving Chinese companies, leading to a future where parallel, redundant systems (U.S.-led vs. China-led) may exist.
  • Sabotage Risks: Governments (UK, Taiwan, Baltic states) are increasing naval patrols to protect cables from "Gray Zone" warfare—intentional clipping of cables to cripple an economy without a formal declaration of war.
  • Geographic Choke Points: The Red Sea, the Strait of Hormuz, and Egypt are critical areas where multiple cables are clustered, making them vulnerable to localized conflict.

Takeaways

  • Sovereignty Risks: Investors in international tech or telecom should monitor "landing point" regulations. Countries are increasingly demanding that data be stored locally (sovereign clouds) as a condition for allowing cables to land.
  • Redundancy as a Necessity: The threat of sabotage is driving a new wave of investment in "alternative routes" (e.g., cables through Saudi Arabia or Iraq to bypass maritime choke points), which increases total project costs but improves systemic resilience.
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Episode Description
In 2006, then-Senator Ted Stevens coined an infamous term for how to understand the internet: It's a "series of tubes." The funny thing is, that's a fairly accurate description. Underneath the world's oceans, miles and miles of fiber optic-cables send packets of information from one location to the next, serving as the backbone of the internet as know it. This infrastructure is delicate, too: Memorably, a 2022 volcanic eruption cut off the island of Tonga from web access for an extended period of time. Journalist Samanth Subramanian is the author of The Web Beneath the Waves: The Fragile Cables That Connect Our World, a book that explains, in detail, that the internet is not, and has never been, truly weightless or wireless. In fact, the system in place right now is pretty old school and resembles the telegraph cable network of yore. We talk to Subramanian about the strange contradictions of the undersea cable system, how much basic marine geography — like the Strait of Hormuz or the Suez Canal — informs where cables are laid, and how hard it is protect this vulnerable and vital infrastructure. Subscribe to the Odd Lots Newsletter Join the conversation: discord.gg/oddlots See omnystudio.com/listener for privacy information.
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