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.
Two Toshiba 4S reactors at the 50 MW version can cost about $3,000,000,000.
Two of those produces 100 MW.
They don't require refueling for around 30 years. $6,000,000,000 to power a 100 MW datacenter when we're talking about $500,000,000,000 is not too dramatic. Especially consider the amortized yearly cost.
If these guys really have $500 billion, they're going to find a way to get electricity.