SpaceX’s planned public offering has ignited intense discussion over its extraordinary market valuation, pegged at $1.75 trillion. Central to this debate is the company’s own estimate of a total addressable market (TAM) valued at $28.5 trillion—equivalent to about a quarter of the global economy and roughly the size of the entire U.S. GDP.
The structure of this immense TAM reveals a striking emphasis on artificial intelligence (AI). Nearly 93% of the market opportunity, approximately $26.5 trillion, is tied to xAI, a division SpaceX acquired recently, while traditional aerospace sectors such as rocket launches and satellite services account for a relatively modest share. This internal breakdown highlights SpaceX’s pivot towards AI as the primary growth driver, overshadowing its more established businesses.
SpaceX’s business currently operates through three main segments: AI (via xAI), Connectivity (Starlink broadband and mobile), and Launch services. Among these, Starlink stands out as the most profitable unit. In 2025, Starlink generated $11.4 billion in revenue, representing more than 60% of the company’s total income and maintaining an estimated 63% EBITDA margin. It serves over 10 million subscribers across 164 countries and is SpaceX’s sole profitable segment following heavy investments to deploy its network.
The grand challenge lies in the IPO valuation itself, which implicitly assumes a dominant market share of an unprecedentedly vast AI-driven sector that SpaceX only recently entered. This optimistic pricing has led to a significant gap in perception: sophisticated investors reviewing the same prospectus arrive at valuations differing by nearly a trillion dollars, highlighting deep uncertainty about whether SpaceX’s projections are visionary or overambitious.
While TAM figures commonly reflect maximal aspirational market coverage rather than guaranteed revenue, SpaceX’s combined valuation anticipates winning a substantial portion of a market rivaling the world’s largest economies. This raises critical questions about the realism of growth expectations and the company’s ability to sustain its current revenue trajectory, which totaled $18.7 billion last year.