India, Nov. 13 -- Never in the history of capitalism has an extra-marital affair (there is more than one of them now, btw) generated so much anxiety in markets. But Jensen Huang -- he resigned as the chief executive officer of Nvidia on Thursday -- and his company also represent an unprecedented phenomenon in the history of capitalism. Huang's company makes (okay, designs) the most cutting-edge graphics processing units (GPUs) in the world. It has a near monopoly on them. Estimates put Nvidia's share of the advanced GPU market at as high as 90%. These GPUs are the building blocks of data centres, the proverbial factories churning out artificial intelligence today.

Why does Nvidia matter to the US? It is the only part of the elite AI hard...