A key red flag in the AI sector is circular financing, where a company like NVIDIA invests in a startup that then uses the funds to purchase NVIDIA's products. This creates a closed loop that can artificially inflate revenue and demand metrics, a tactic reminiscent of the dot-com bubble.

Current AI investment patterns mirror the "round-tripping" seen in the late '90s tech bubble. For example, NVIDIA invests billions in a startup like OpenAI, which then uses that capital to purchase NVIDIA chips. This creates an illusion of demand and inflated valuations, masking the lack of real, external customer revenue.

The AI ecosystem appears to have circular cash flows. For example, Microsoft invests billions in OpenAI, which then uses that money to pay Microsoft for compute services. This creates revenue for Microsoft while funding OpenAI, but it raises investor concerns about how much organic, external demand truly exists for these costly services.

Companies like NVIDIA invest billions in AI startups (e.g., OpenAI) with the understanding the money will be spent on their chips. This "round tripping" creates massive, artificial market cap growth but is incredibly fragile and reminiscent of the dot-com bubble's accounting tricks.

Gurley flags deals where tech giants invest in AI startups with credits for their own services. The startup's use of these credits is then booked as revenue by the investor. This practice inflates revenue without any actual cash changing hands, a tactic that was compared to Enron's accounting.

Jensen Huang counters accusations of inflating revenue by investing in customers. He clarifies the investment in OpenAI is a separate, opportunistic financial bet, while chip sales are driven by market demand and funded independently by OpenAI's own capital raising—not by NVIDIA's investment.

Large tech firms invest in AI startups who then agree to spend that money on the investor's services. This creates a "circular" flow of cash that boosts the startup's perceived revenue and the tech giant's AI-related sales, creating questionable accounting.

Unlike sham transactions that invent revenue, investments like Nvidia's into its GPU customers are economically sound. The deciding factor is the massive, verifiable downstream demand for the AI tokens these GPUs produce. This makes the deals a form of strategic credit extension, not fraudulent accounting.

The AI infrastructure boom is a potential house of cards. A single dollar of end-user revenue paid to a company like OpenAI can become $8 of "seeming revenue" as it cascades through the value chain to Microsoft, CoreWeave, and NVIDIA, supporting an unsustainable $100 of equity market value.