The $7.5 trillion AI buildout is a railroad story, not an AI story

SpaceX bought Elon's AI compute clusters and rented them to Anthropic for $15 billion a year. One deal. One quarter. SpaceX nearly doubled its total revenue by becoming a cloud provider. This isn't an AI story. It's an infrastructure story.

The total AI buildout over the next 4.5 years is estimated at $7.5 trillion. About 5% of US GDP. Analysts are comparing it to the 1880s railroad boom.

Every design tool you use runs on top of this infrastructure. Figma, Claude, Cursor, the APIs your prototypes call, the models embedded in your workflow.

Most designers I know think about their stack at the tool level. Which agent is faster. Which model gives better results. What the next update means for handoffs.

What happens to those tools when the infrastructure layer underneath them is changing hands at railroad speed?