SoftBank isn't a US entity, right? Aside from their risk tolerance, that seems like an odd bedfellow for a national US initiative...
It doesn't seem to be a US initiative.
I'm sure they're getting tax credits for investment (none of the articles I can find actually detail the US gov involvement) but the project is mostly just a few multinationals setting up a datacenter where their customers are.
They’re in the US (their fund stuff). Not far from an oracle campus actually. The parent org is in Japan.
MGX also isn't a US entity, it's a UAE sovereign wealth venture
https://www.mgx.ae/en