@petrillic
Not only could they, there is industry precedent. When Apple started moving from microdrives to flash for the iPods, they realised that they were vastly increasing the demand for flash. They made a deal with their foundry that they would pay the capex for a new fab and, in exchange, get 100% of the output for the first two (I think) years, then discounted rates for a few more years. The foundry ate the opex for a couple of years but then got a free fab.
When the iPod Shuffle launched, it was cheaper than many equal-sized flash drives which weren’t also music players because this arrangement gave Apple a much lower wholesale price for flash than anyone else.
A company that believes it is going to increase demand for a particular kind of IC enough that suppliers need to scale up faster is always able to make this kind of deal. Especially if they’re running at such a profit that they have large cash reserves. You do have large cash reserves from making the profits you reported, right NVDA? You’re not misleading investors with circular financing that is massively inflating your revenue numbers, are you?