Nvidia is buying customers that will likely have increasing need for Nvidia. Those investment dollars will be spent on Nvidia. Future dollars will be spent on Nvidia.

Second order effects are that everyone serviced by AI today will need even more AI tomorrow. Nvidia is there for that. They're increasing AI proliferation.

By increasing the number of engineers, dollars, watts spent on GPU, Nvidia grows its market.

The added benefit here is that Nvidia gets to share in the upside if any of these companies succeed in their goals.

It's as if Microsoft had Azure back before the doctom boom and took investments in Google, Amazon, and Facebook in exchange for hosting them. (And maybe a few misfires, like WebVan.)

This is really smart chess play.