It's not circular financing, although Nvidia give startups investment money so they can give it back to Nvidia for hardware?
If it looks like circular financing and smells like circular financing it’s circular financing.
Nobody is under any illusions that most if not nearly all this money is for anything other than buying GPU compute.
They're forecasting around $700b in revenue next year.
These investments are likely drop in a bucket. A rounding error.
What they're truly looking for is the next OpenAI and to make sure that company runs on Nvidia.