The Catalyst: Off-World Resource Extraction & Interplanetary Trade.
The Reality: To mathematically reach a quadrillion dollars ($1,000\text{,000,000,000,000}$), you have to look beyond Earth’s GDP entirely.
This milestone requires the operational maturity of Starship-class heavy transport, enabling high-frequency, automated asteroid mining for rare-earth and platinum-group elements.
The moment a single entity establishes the core infrastructure for an off-world supply chain and autonomous Mars logistics, the valuation of that infrastructure expands beyond terrestrial economic metrics.