SpaceX's galaxy math
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Elon Musk claims SpaceX can tap into a $28.5 trillion market for its business, the largest "in human history," per the company's prospectus.
Why it matters: It's an astoundingly huge number — only slightly less than U.S. gross domestic product, which is the value of everything the biggest economy on earth produces.
Zoom in: In the IPO filing, SpaceX says it has a total addressable market, or TAM, of $28.5 trillion.
- That's the maximum potential revenue the company could make were SpaceX able to land every potential customer in existence (and it explicitly excludes Russia and China, the world's second largest economy).
- The bulk of the number comes from the company's AI business, estimated at a potential $26.5 trillion.
For the record: The estimate doesn't capture the revenue potential of colonizing Mars, a stated milestone in the prospectus.
Yes, but: OK, to be fair, SpaceX is not simply saying that it can somehow sell to nearly all of the U.S. economy. It provides services across 164 countries, after all.
- Fine. Global GDP is nearly $111 trillion — so the company is looking only to capture about a quarter of all the economic activity of the planet.
Reality check: Even in that context, SpaceX's number appears wildly ambitious.
- "In one word, it's farcical," says Ryan Cummings, an economist and chief of staff at the Stanford Institute for Economic Policymaking.
Yes, but: An estimate like this is by its nature imprecise — it's an optimistic take on the potential for your business.
- And Musk is certainly known for tossing big numbers into the mix. He famously promised to cut $2 trillion from the federal government's budget. He did not.
Flashback: Others have reached for the sky in their TAM estimates. Uber in its 2019 IPO prospectus estimated a $5.7 trillion global market in ride-hailing, which as Robert Cyran of Reuters Breakingviews noted, would equate to "essentially all journeys made in 175 countries, including public transit."
- That same year, office space company WeWork was criticized for estimating a $1.6 trillion market in its IPO filing (which it later withdrew).
- Yet this can go the other way, too. Amazon's prospectus in 1997 simply talked about its potential to sell into the worldwide book market — a $90 billion market at that time. We all know how that went.
Between the lines: In theory, the SEC will scrutinize and comment on exaggerated claims, says Dorothy Lund, a professor at Columbia Law School who studies securities law. "That's very unlikely here."
- The agency did settle a case with a small biotech firm in 2024 over allegations that it misled investors over its market potential and sales prospects.
How it works: SpaceX says it can create new "multi-trillion-dollar" markets across space, AI and something it calls "connectivity," essentially the satellite internet services provided through its successful Starlink business.
- "We believe space represents the largest economic frontier in human history. Our innovations and technological advancements are redefining existing industries and creating new market opportunities."
