Nvidia's Full-Stack Reinvention: The $65B Portfolio Isn't a Moat, It's a Dependency Map
The Economist's GTC week profile frames Nvidia's expansion into networking, CPUs, models, and sovereign AI as a strategic reinvention; the article never asks the margin question. Nvidia's $216B revenue at ~73% gross margin is a GPU monopoly number: networking, CPU-only servers, and government bundles don't carry that margin. The $65B investment portfolio ($30B in OpenAI alone) is presented as ecosystem lock-in, but OpenAI already runs inference on Azure custom silicon. The portfolio isn't a moat; it's a subsidy that masks true cost-of-compute and unwinds the moment inference gets cheap enough on non-Nvidia hardware. The buried structural risk: three hyperscalers account for over half of receivables, and those same three are the ones building the substitutes.