A blistering AI buildout is increasingly tethered to a small circle of corporate buyers, stirring concern that the market’s hottest trade rests on a narrow base. Nvidia disclosed that two direct customers made up nearly 40% of second-quarter sales—23% and 16% respectively—though end-user exposure may be more diffuse, with two unnamed users each contributing at least 10%. Broadcom shows similar concentration, with one distributor near 30% of recent sales and roughly 40% from its five largest end users. The risk extends beyond chips: Oracle’s order backlog swelled by about $320 billion, largely tied to a five-year, $300 billion cloud deal with OpenAI—an agreement whose revenue realization depends on usage, model choices, and the funding climate. Bulls argue surging, cross-industry AI demand could backfill any pullback from a single heavyweight. Skeptics counter that if investors’ risk appetite fades or model performance underwhelms, big-ticket commitments could be revised and the AI-led market rally could wobble. OpenAI, with reported $12 billion in annualized revenue and a ~$500 billion valuation, is targeting $125 billion by 2029, a trajectory that may require continued investor support if cash burn persists.































