The Starlink NetworkWide moat

Somewhere along the way the rocket company became a telecom, and the telecom is where the money now is. Starlink — a constellation of thousands of low-orbit satellites selling broadband directly to consumers, businesses, ships, planes, and armies — passed ten million subscribers around the time SpaceX went public¹ and generated the majority of the company's revenue, over eleven billion dollars in 2025. More important than the size is the shape: this is a network business with the classic self-reinforcing economics that build the widest moats in any industry.

The advantages compound. SpaceX got to low orbit first and at scale, staking out the orbital shells and the radio spectrum — both genuinely scarce, first-come resources — before anyone else could launch a competing constellation. It manufactures its own satellites cheaply, launches them on its own rockets for a fraction of a rival's cost, and replaces them on a short cycle, so its unit economics improve as it scales in a way a latecomer buying launches on the open market simply cannot match. And it sells a service that works where nothing else does — the open ocean, the disaster zone, the rural valley the cable never reached — which means much of its market has no real alternative at all.

The profitability is inflecting, and that is the part the public investors are watching most closely. For years Starlink was a cash furnace; now the connectivity segment throws off real operating profit, and it is that turn — a hyper-growth network reaching the scale where the fixed costs of the constellation are spread over enough subscribers to mint money — that underwrites much of SpaceX's valuation. The launch business is the moat that made it possible; Starlink is the moat that is starting to pay.