I'm not sure this is money laundering (that would imply there's a bunch of dirty money to get clean). But it is a scheme for sure.

Most of that cash is going to be spent, either directly or indirectly, on hardware from nVidia and now I bet they're going to use a bunch of cloud services from Amazon too.

Just inflating stock prices all round because for its investment in OpenAI, nVidia probably gets to own part of OpenAI + also one of the biggest end customers for their data center GPUs has more money to either build data centers or rent from existing providers.