In the last two weeks, NextEra agreed to buy Dominion Energy for $67 billion to feed data center power demand. Anthropic signed a deal to pay xAI $1.25 billion per month for compute. CoreWeave doubled Q1 revenue but carries $25 billion in debt at 11% interest. And the hyperscalers collectively guided to $725 billion in 2026 capex. Everyone is building as fast as they can — but the demand forecasts justifying all of it rest on assumptions that Goldman Sachs says can swing by hundreds of billions with a single variable change. Today's thesis: the data center capex chain, who's exposed, and what breaks if the projections are wrong.