If the electric grid — particularly the interconnection queue — is already the bottleneck to data center deployment, is something on this scale even close to possible? If it's a rationalized policy framework (big if!), I would guess there's some major permitting reform announcement coming soon.
Also I have no doubt that the timing is deliberate and that this is not happening without government endorsement. If I had to guess the US military also is involved in this and sees this initiative as important for national security.
The venture was announced at the White House, by the President, who has committed to help it by using executive orders to speed things up.
It might not have been voted by congress or whatever, but just those things makes it pretty clear the government provides more than just "moral support".