Quite the contrary! They effectively sell their cards at a ~20% discount to a bunch of AI companies by "investing" in the companies for a promise to use that money to buy their cards.

It's as dumb as it sounds and textbook unsustainable economic bubble behavior, but NVidia don't care because more sales = more stonks = more money to "invest" = more sales = more stonks = more yachts for Jensen. So what if it makes 1929 look like a walk in the park, it's not their problem.