Could Nvidia really default? After $96.2 billion in quarterly revenue, nearly $60 billion in net income, a forecast for ~70% growth next year and a reported $12.9 billion acquisition of Hugging Face, that premise looks more like clickbait than credit analysis. In this Shimmy Says, Alan Shimel explains why Nvidia has become the living, beating heart of AI — supplier, financier, marketplace and circulatory system of the AI economy — and why concentration, not default, is the risk worth watching.