The man who built SpaceX's first engines just told us what Wall Street actually bought: not rockets, but the vertical stack for computing in orbit.
The Summary
- Tom Mueller, SpaceX employee #1 and now CEO of Impulse Space, walked through the company's journey from 2002 startup to $2 trillion public company, hitting milestones from orbit to reusable rockets to global internet.
- The IPO thesis isn't launch services anymore. It's a vertically integrated platform for space-based computing and AI.
- Mueller frames this as the infrastructure layer for the next industrial revolution, not a satellite company that happens to launch rockets.
The Signal
SpaceX went public at a $2 trillion valuation, making it one of the largest IPOs in history. But the pricing story isn't about launch capacity or even Starlink subscribers. Mueller says investors are betting on vertically integrated space infrastructure that combines launch, connectivity, compute, and power in a single stack. That's a different product than what Blue Origin or Rocket Lab are selling.
The company went from repeated test failures in the early 2000s to controlling every layer of the orbital economy. Key milestones included reaching orbit, servicing the International Space Station, perfecting reusable rocket landings, and deploying global internet through Starlink. Each step reduced the cost of the next one. Reusability made Starlink economically viable. Starlink's revenue funded Starship development. Starship will enable the orbital data centers that justify the $2 trillion valuation.
"Investors are buying a vertically integrated vision for space-based computing, AI, and the next industrial revolution."
Here's what makes this different from typical infrastructure plays:
- SpaceX owns launch (Falcon, Starship), connectivity (Starlink), and now positioning for compute and power in orbit
- Traditional satellite companies lease capacity. SpaceX manufactures the entire stack, end to end.
- The bull case isn't telecom subscriptions. It's AI training runs and data processing that can't happen on Earth due to power, cooling, or latency constraints.
Mueller's perspective matters because he was there when the company nearly died multiple times. Early SpaceX faced widespread skepticism and repeated failures before hitting the milestones that became obvious in hindsight. He's now building Impulse Space, which makes orbital transfer vehicles. He's betting his second act on the same thesis: space infrastructure is moving from science projects to industrial-scale operations.
The $2 trillion valuation implies SpaceX will become the AWS of orbital infrastructure. That requires data centers in space, persistent power generation, and traffic between ground and orbit measured in petabytes, not gigabits. None of that exists yet at commercial scale. But the vertical integration gives SpaceX the shortest path to building it without negotiating with suppliers, regulators, or partners at every layer.
The Implication
If Mueller's right, SpaceX's IPO marks the moment orbital infrastructure became a financeable asset class. Watch where the first orbital data centers get deployed and who gets early access. If you're building AI systems that need massive compute or training on data streams that can't leave orbit, SpaceX just became your only vertically integrated option. For everyone else building in space, the question is whether you're selling SpaceX a component or competing with their entire stack.