That depends on your definition of a commodity, dome definitions effectively limit it to raw materials while others define it as any economic good [1].
If Nvidia can truly print money as long as TSMC can make chips, as claimed above, I'd argue that's at least in a gray area for commodities. The chip is effectively a raw material as far as Nvidia is concerned, and it acts much like gold or oil in that scenario as the argument is that there is an unlimited market willing to buy any GPU that Nvidia can create.
Having a monopoly doesn't mean the product itself isn't a commodity. De Beers has a monopoly on diamonds, but I'd expect diamonds to fit into most people's definition of a commodity.
If Nvidia can truly print money as long as TSMC can make chips, as claimed above, I'd argue that's at least in a gray area for commodities. The chip is effectively a raw material as far as Nvidia is concerned, and it acts much like gold or oil in that scenario as the argument is that there is an unlimited market willing to buy any GPU that Nvidia can create.
Having a monopoly doesn't mean the product itself isn't a commodity. De Beers has a monopoly on diamonds, but I'd expect diamonds to fit into most people's definition of a commodity.
[1] https://en.m.wikipedia.org/wiki/Commodity