AI Capex Circular Thesis: Nvidia Invests, Infrastructure Multiplies, Valuations Soar

NVIDIA has emerged as the de facto architect of AI infrastructure, not just a chip supplier. Jensen Huang stated explicitly that CoreWeave would not exist without Nvidia's support, and the company is now financially backing numerous infrastructure plays across AI compute, networking, and optical components. This creates a circular investment thesis: Nvidia builds relationships with and invests in data center infrastructure vendors, those vendors expand capacity (creating demand for Nvidia chips), and Nvidia takes credit for the entire value chain. The market rewards this narrative by assigning premium valuations to infrastructure names like IREN (CoreWeaver), NBIS, CRWV, and others.

The bull case is straightforward: AI capex will dominate enterprise spending for the next decade, and Nvidia's ability to orchestrate this ecosystem ensures both its own dominance and the success of allied suppliers. Wall Street has embraced this 'vertical stack' thesis, with Goldman Sachs and others assigning multi-year margin forecasts to memory chipmakers and optical component vendors. Wells Fargo recently raised its CoreWeave price target, and analysts routinely argue that energy costs and supply chain concentration will persist long enough to sustain the supercycle.

However, the circularity creates a moral hazard: if Nvidia is funding infrastructure vendors' capex, then demand is not organic market demand but rather Nvidia's willingness to finance its own customers' expansion. This inverts the traditional supplier-customer relationship and raises questions about whether the infrastructure vendors can survive without Nvidia's patronage or would need to aggressively cut capex if Nvidia withdraws support. Additionally, the Iran war's energy shock could force foundries and data centers to throttle utilization, reducing the urgency of new infrastructure buildouts.

One trader noted that Nvidia's recent stock weakness, despite semiconductor strength, hints that the market is beginning to reprrice the circularity risk. If Nvidia's Q2 or Q3 earnings reveal slowing demand or margin pressure, the entire infrastructure thesis could unwind as investors reassess whether these vendors can achieve standalone profitability.