a16z
October 30, 2025

"Is there an AI bubble?” Gavin Baker and David George

Gavin Baker, CIO of Atreides, and a16z’s David George dissect the AI frenzy, arguing we’re not in a bubble but in a rational, ROI-positive infrastructure buildout, drawing sharp contrasts to the dot-com bust.

No Bubble, Just Buildout

  • "The year 2000 internet bubble was defined by something called dark fiber. At the peak, 97% of the fiber that had been laid was dark. Contrast that with today. There are no dark GPUs."
  • Unlike the speculative dot-com era, today's AI infrastructure spending is driven by real-world demand. The biggest GPU buyers (hyperscalers) have seen a 10-point increase in their Return on Invested Capital (ROIC), confirming the investment is profitable.
  • Valuations are far more grounded. At its peak, Cisco traded at 150-180x trailing earnings; NVIDIA currently trades at a more reasonable 40x.
  • The primary investors are the world's most profitable companies, collectively generating ~$300 billion in annual free cash flow with ~$500 billion in cash, providing a massive financial buffer for the buildout.

The Chip War Heats Up

  • "It's a fight between Nvidia and the Google TPU... Broadcom and AMD are effectively going to market together."
  • NVIDIA’s biggest competitor isn’t another chip designer but Google, whose TPU is the only viable training alternative today. NVIDIA’s "round-tripping" investments in labs like OpenAI are a rational defense to ensure a customer base not captive to Google’s hardware.
  • Broadcom and AMD have formed an alliance to offer an open, Ethernet-based alternative to NVIDIA’s proprietary stack. Broadcom builds the fabric, and customers can plug in AMD chips if their custom ASICs fail.
  • Most custom ASIC programs are expected to fail, solidifying the market around NVIDIA, Google, and the Broadcom/AMD coalition.

SaaS Must Sacrifice Margins

  • "It is definitionally impossible to succeed in AI without gross margin pressure... Don't be scared and look at declining gross margins as a mark of success rather than a badge of shame."
  • The era of 80-90% gross margins for software is ending. AI-native products are compute-intensive, meaning lower margins are a sign of actual usage and adoption, not a business flaw.
  • Incumbent SaaS companies are too focused on preserving old margin structures and are failing to compete aggressively. They should use profits from legacy products to run new AI features at break-even to gain market share, a strategy few are brave enough to try.

Key Takeaways:

  • This isn’t a speculative bubble; it’s a capital-intensive platform shift financed by the world's most profitable companies. The foundational layers of the AI economy are being built with a clear line of sight to ROI, creating tectonic shifts in hardware, software, and business models.
  • It's Not a Bubble, It's a Race. The AI buildout is a rational, ROI-positive arms race funded by cash-rich giants. Unlike the dot-com era’s "dark fiber," today’s GPUs are fully utilized, generating immediate returns.
  • Sacrifice Margins or Die. SaaS companies must abandon their obsession with 90% gross margins. In the AI era, lower margins signal that customers are actually using your product. Embrace them or become irrelevant.
  • The New Outcome Economy is Coming. Business models will pivot from subscriptions to outcomes. AI will enable services to be priced on measurable results, from resolving a customer support ticket to booking the perfect vacation, squeezing inefficiency out of the market.

For further insights and detailed discussions, watch the full podcast: Link

This episode dissects the AI bubble debate, revealing why the current infrastructure buildout is fundamentally different from the dot-com bust and what the underlying economics mean for investors.

The AI Bubble Debate: 2000 vs. Today

  • David George opens by framing the scale of the current AI infrastructure investment, noting that over the last three years, more capital has been spent on data centers (inflation-adjusted) than on the entire 40-year US interstate highway project. Despite these massive figures, Gavin Baker argues forcefully that we are not in an AI bubble, drawing a sharp contrast to the year 2000 telecom bubble.
  • The 2000 bubble was defined by dark fiber—fiber optic cable that was laid in the ground but never activated or used. Gavin highlights that at the market's peak, an astonishing 97% of all fiber was dark.
  • Today’s environment is the polar opposite. There are no "dark GPUs." Every piece of compute is being utilized to its maximum capacity, evidenced by technical papers frequently citing GPU overheating as a primary challenge in training runs.
  • Gavin Baker, drawing on his experience as a tech investor during the 2000 bubble, points to the financial metrics: “At the peak of the bubble, 97% of the fiber that had been laid in America was dark. Contrast that with today. There are no dark GPUs.”
  • Strategic Implication: The core indicator of health is utilization. Unlike the speculative buildout of 2000, today's AI infrastructure spending is directly tied to intense, measurable demand and positive Return on Invested Capital (ROIC) from the largest tech companies.

The Financial Strength of AI's Biggest Spenders

  • The conversation pivots to the financial stability of the companies funding this AI buildout. David George points out that the primary customers for this massive capital expenditure are the world's most profitable and cash-rich companies.
  • Collectively, the major tech giants generate approximately $300 billion in free cash flow annually and hold around $500 billion in cash on their balance sheets.
  • This immense financial cushion provides a powerful buffer against market volatility and underscores their ability to sustain this level of investment.
  • Gavin adds that for these companies, the AI race is viewed as existential. He references the internal sentiment at Google, attributed to Larry Page, of being "happy to go bankrupt rather than lose this race," illustrating the strategic imperative driving the spending.

Deconstructing "Round-tripping" Deals

  • The discussion addresses the controversial topic of round-tripping, a practice where a company invests in its customers, who then use that capital to purchase the investor's products. While this occurred during the dot-com era with negative connotations, Gavin argues the current context is different.
  • He asserts that while round-tripping is objectively happening (e.g., Nvidia investing in labs that buy its chips), it is occurring at a small scale and is driven by competitive strategy, not financial engineering.
  • Nvidia's primary competitor is not another chipmaker but Google, which controls a vertically integrated stack with its TPU (Tensor Processing Unit)—a custom-designed AI accelerator—the DeepMind research lab, and the Gemini model.
  • When Google offers capital and chip access to labs like Anthropic, Nvidia's investments in companies like OpenAI are a rational, defensive response to secure its own ecosystem.

Market Structure of AI Model Companies

  • Gavin Baker stresses the need for humility when predicting winners at the model and application layers, comparing the current moment to the pre-Google era of the internet. However, he outlines the key factors that will determine success.
  • The largest tech incumbents have a significant advantage, as AI can be a "sustaining innovation" for them. They possess the five critical ingredients: data, distribution, compute, capital, and talent.
  • A key economic shift is that AI-native businesses will have structurally lower gross margins than traditional SaaS companies due to the high, ongoing cost of compute. This is a fundamental change in the software business model.
  • Strategic Implication: Investors should not expect traditional 80-90% SaaS gross margins from leading AI companies. Instead, they should look for signs of strong unit economics and operating leverage, even with lower gross margins.

The Future of Application Software (SAS)

  • The conversation dives into the existential threat and opportunity AI presents to the established Software-as-a-Service (SaaS) industry. Gavin argues that many public SaaS companies are making a critical error by trying to protect their legacy gross margins.
  • He argues that embracing lower gross margins is a necessary sign of success in AI, as it indicates genuine, compute-intensive product usage.
  • Gavin draws a parallel to Microsoft's successful transition to the cloud, where the company accepted lower initial margins to win a new market, ultimately leading to massive value creation.
  • David George reinforces this from a venture perspective: "it's become like a badge of honor for them to actually have low gross margins because... people are actually using your AI stuff."
  • Actionable Insight: For investors, a SaaS company's willingness to strategically lower its gross margins to drive AI adoption could be a powerful leading indicator of long-term success, rather than a sign of weakness.

The Consumer Internet Shake-Up

  • The discussion turns to the consumer layer, where AI is poised to fundamentally change how users interact with the internet. The old model of search-and-redirect is being replaced by AI agents that complete tasks directly.
  • Gavin expresses skepticism about the long-term viability of standalone AI browsers, predicting that Google will leverage its enormous distribution advantage with Chrome (5 billion users) to integrate and dominate this space.
  • He notes that reasoning capabilities in new models, combined with RL (Reinforcement Learning) from user interactions, are creating the classic consumer internet flywheel for the first time in AI, where more users directly improve the product. This strengthens the position of labs with large user bases like OpenAI, Anthropic, and XAI.

The High-Stakes Chip Market

  • Gavin provides a clear analysis of the competitive dynamics in the AI hardware market, framing it as a battle between distinct ecosystems.
  • The primary conflict is between Nvidia's full-stack solution (chips, software like CUDA, and networking like NVLink/Infiniband) and Google's vertically integrated TPU.
  • A third force is emerging with Broadcom and AMD, who are effectively partnering to offer an open, Ethernet-based fabric and chip alternative for companies like Meta.
  • Gavin is skeptical of most custom ASIC (Application-Specific Integrated Circuit) programs—chips designed for a single purpose—predicting many will be canceled as they struggle to compete with the performance and flexibility of the major platforms.

The Shift to Outcome-Based Business Models

  • A major theme is how AI enables a fundamental shift away from subscription or seat-based pricing toward models based on value and outcomes.
  • David George highlights customer support as a clear early example, where startups like Decagon can price their service based on the successful resolution of a customer ticket rather than per agent seat.
  • Gavin extends this concept to the consumer world, envisioning a future where personal AI agents perform tasks like booking travel and are compensated via affiliate fees tied to the final transaction—a pure, outcome-based model. This efficiency will squeeze out the overpayment inherent in the current advertising model.

A Glimpse into the Future: Robotics and AGI

  • The conversation concludes with a look at more futuristic applications. Gavin is highly optimistic about the near-term potential of robotics.
  • He frames the market as a head-to-head competition between Tesla and Chinese manufacturers, similar to the electric vehicle market.
  • He believes the debate over humanoid versus non-humanoid robots is settled, with humanoids having a decisive advantage due to their ability to learn from the vast corpus of human-centric video data (e.g., YouTube) and be trained via human demonstration.
  • On AGI, he notes how the goalposts have moved, finding it remarkable that Andrej Karpathy's 10-year timeline for AGI is now considered a "skeptical" take.

Conclusion

The AI buildout is not a speculative bubble but a rational, capital-intensive race driven by real usage and positive ROI. Investors and researchers should focus on the underlying economics—GPU utilization, shifting software gross margins, and the strategic battles in the chip market—to navigate this transformative technological shift.

Others You May Like