When Bloomberg reporter Dina Bass began pulling on the thread of AI financing, what she found looked less like a gold rush and more like a hall of mirrors. Enormous sums — measured in the tens of billions of dollars — are moving between a surprisingly small circle of technology giants, cloud providers, and AI start-ups, raising a question that is becoming impossible to ignore: who, ultimately, is the real paying customer? The concern centres on what critics call circular financing. In its simplest form, Company A invests in an AI start-up, which then uses that money to rent computing power from Company A's cloud platform.

The start-up's revenue rises, making it appear healthy to outside investors, yet much of that revenue has effectively travelled in a loop and returned to its origin. Bass, speaking on NPR's Weekend Edition with host Ayesha Rascoe, described the pattern as one that "muddies the picture" of where genuine demand for AI products actually exists. It is a structure that has drawn comparisons to the related-party transactions that regulators scrutinised after earlier tech bubbles. The stakes are high precisely because so many pension funds, sovereign wealth funds, and retail investors in North America, Europe, and beyond have staked positions on AI's promise of transformative growth.

If the underlying revenue is partly illusory — circular rather than organic — the eventual correction could be severe. Regulators in the United States have begun asking pointed questions, and analysts in Singapore and London are reportedly running their own stress-tests on AI balance sheets.