Robinhood co-founder's Cowboy Space is vertically integrating into rocket manufacturing not just for launch capacity, but because its core architecture requires it. They plan to transform the rocket's upper stage directly into a data center, a design that necessitates full control over the launch vehicle itself.

The two largest physical costs for AI data centers—power and cooling—are essentially free and unlimited in space. A satellite can receive constant, intense solar power without needing batteries and use the near-absolute zero of space for cost-free cooling. This fundamentally changes the economic and physical limits of large-scale computation.

On Earth, each new data center is more expensive than the last due to land and energy constraints. In space, manufacturing satellites at scale and declining launch costs (via Starship) mean the marginal cost for each new data center goes down, creating fundamentally different scaling economics.

The economic case for space-based data centers is a 5x capex reduction compared to terrestrial equivalents ($5B vs. $25B per gigawatt for infrastructure). This massive cost saving comes from eliminating the need for land, traditional power infrastructure, and cooling, which are effectively free in orbit.

The company initially aimed to beam solar power from space to Earth but pivoted to data centers in orbit. This was driven by a first-principles economic analysis: using power in space for high-margin compute avoids massive energy transmission losses and targets a more valuable market (AI), making the business viable.

Once Starship is fully reusable, orbital computing becomes economically compelling. A terrestrial gigawatt costs ~$60B, with ~$25B for power and cooling which space avoids. Even with a ~$5B launch cost, the total for an orbital data center becomes significantly cheaper.

Recent viability for orbital data centers doesn't stem from new server technology, but from SpaceX's Starship rocket. Its success in dramatically lowering the cost of launching mass into orbit is the critical, non-obvious enabler that makes the entire concept economically plausible for the first time.

Learning from Robinhood, Bhatt believes controlling unit economics requires vertical integration. For Cowboy Space, this means building its own rockets. There isn't enough launch capacity available, and owning the stack is the only way to control costs and destiny for such an ambitious project.

Investor Gavin Baker argues that once Starship is fully reusable, the cost of launching a gigawatt of compute into orbit could be half the cost of building it terrestrially ($30B vs. $60B). This is because space eliminates the significant power and cooling costs (around $25B per gigawatt) required on Earth, creating a compelling economic case for orbital data centers.