SpaceX's business model has evolved from a single-service launch provider into a multi-segment commercial aerospace and telecommunications platform. Understanding its revenue architecture requires examining four distinct business lines: launch services, human spaceflight, Starlink broadband, and government contracts — each with different margin profiles, growth trajectories, and strategic functions. Launch services remain SpaceX's most visible commercial activity. The Falcon 9 rocket, priced at approximately $67 million per commercial launch, competes directly against United Launch Alliance's Atlas V (retired) and Vulcan Centaur ($100M+), Arianespace's Ariane 6 ($115M+), and international competitors. SpaceX's cost advantage derives from booster reuse — a reflown first stage reduces the per-launch cost structure significantly compared to expendable competitors — and from vertical integration that eliminates supplier markup on approximately 70% of components. The Falcon Heavy, at $97 million per launch, provides heavy-lift capability for large commercial satellites and government payloads. SpaceX's launch manifest has grown to 90+ launches per year, a cadence that no competitor approaches. Government contracts represent the foundational revenue layer of SpaceX's business. NASA relationships include the Commercial Resupply Services (CRS) program for ISS cargo, the Commercial Crew Program for astronaut transport (at approximately $55 million per seat on Crew Dragon), and the Artemis HLS contract for lunar landing. US national security launch contracts through the Space Force's National Security Space Launch (NSSL) program represent high-value, strategically significant contracts, with SpaceX certified to compete for the most sensitive government payloads. Government contracts provide revenue visibility and volume commitments that underwrite the capital investment required for next-generation vehicle development. Starlink is the transformative revenue engine that has structurally changed SpaceX's financial profile. The business model is straightforward at the consumer level: residential subscribers pay $120 per month (standard service) or $250 per month (priority service) plus a $599 hardware kit. Business, maritime, and aviation tiers command significantly higher pricing — Starlink Maritime costs $5,000 per month, and aviation connectivity for commercial airlines is priced at the enterprise level. With 3+ million subscribers and rapidly growing enterprise and government contracts (including contracts with multiple national militaries and commercial airlines), Starlink's annual revenue run rate of $6–8 billion makes it one of the fastest-scaling telecommunications businesses in history. Critically, SpaceX manufactures Starlink satellites entirely in-house at its Redmond, Washington facility, producing approximately 6 satellites per day at an estimated per-unit cost well below $500,000 — a manufacturing cost structure that is 10–20x more efficient than traditional satellite manufacturers. This vertical integration in satellite manufacturing is as strategically significant as rocket reusability in launch services. The Starship program, when operational at scale, is designed to restructure SpaceX's cost position across all business lines. By replacing Falcon 9 and Falcon Heavy with a fully reusable system capable of rapid turnaround, SpaceX's target economics of sub-$10 million per launch would create a cost floor that no competitor can approach with expendable or partially reusable alternatives. Starship also enables new mission categories — point-to-point Earth logistics, large-scale Mars cargo, and lunar surface access — that represent entirely new addressable markets. SpaceX's pricing strategy is deliberately aggressive: prices are set to win market share and expand the total addressable market rather than to maximize per-unit margin. This is a classic platform-building strategy — by driving launch costs down, SpaceX creates demand for space access from customers who previously could not afford it (small satellite operators, emerging economy governments, research institutions), expanding the market while building dominant share. The resulting volume gives SpaceX a cost learning curve advantage that compounds over time. The company remains privately held, which provides critical strategic flexibility. SpaceX has avoided the quarterly earnings pressure that forces publicly traded aerospace companies to prioritize near-term profitability over long-duration capital programs. Bernard Arnault's LVMH model of reinvesting premium brand margins into long-term brand equity has a rough analog in SpaceX's reinvestment of Falcon 9 and Starlink profits into Starship development — a generational capital program that public market investors would likely not tolerate.