Nvidia has become the defining stock of the artificial-intelligence era, and the long-term numbers are striking. According to KuCoin (via Google News), a $1,000 investment in Nvidia's IPO would have grown into millions over 27 years — a reminder of how dramatically the chipmaker has rewarded early backers.

The bull case rests on Nvidia's grip on the hardware that powers AI. According to an MSN commentary, Nvidia's dominant position in AI infrastructure means the stock should keep creating value, as demand for its chips continues to climb.

That demand, however, comes with a catch. The Motley Fool highlights two "Nvidia-owned" stocks — companies Nvidia has stakes in — that it argues investors should consider now. But the same reporting points to a growing worry: the sheer amount of cash these AI players need to keep up with demand.

One example is CoreWeave, a cloud-computing firm tied to Nvidia. According to The Motley Fool, investors are increasingly concerned by how much cash is required to meet AI demand, noting that CoreWeave's debt levels had almost reached $25 billion in the first quarter — a considerable burden for the company.

The picture that emerges is two-sided. Nvidia itself sits at the center of the AI boom, with a track record few companies can match. Yet the broader ecosystem it anchors is leaning heavily on borrowing to build out the data centers and computing capacity that AI requires.

Why it matters: Nvidia's stock has become a proxy for the entire AI trade, so the tension between its dominance and the debt-fueled spending of its partners signals how much risk is riding on AI demand staying strong.