“Growth, when it’s accompanied by huge amounts of reinvestment and substandard gross margins, might not just be neutral to value, but actually be value destructive.”
— Aswath Damodaran, The Intangible Economy, June 2026
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Listen to the deep-dive discussion – Why SpaceX Growth Might Destroy Value
I. The Heresy
There is a belief so deeply embedded in investing that almost no one examines it: that growth is always good. A growing company is a healthy company. More revenue, more scale, more future. The narrative writes itself.
Aswath Damodaran — the NYU professor known as the Dean of Valuation, who has spent four decades teaching the discipline of putting numbers to stories — has just said the opposite. Examining the SpaceX prospectus ahead of its record-breaking IPO, he reached a verdict that cuts against the reflex of an entire market: growth, under the wrong conditions, does not merely fail to add value. It destroys it.
Not neutral. Destructive. To understand why a master of valuation would say something so counterintuitive, you have to look at the arithmetic underneath.
II. The Arithmetic
Growth is not free. To grow, a company must reinvest — in capacity, in research, in infrastructure, in acquisitions. The amount it must reinvest is determined by a simple relationship: the faster you want to grow, and the lower your return on capital, the more you must pour back in to get there.
This produces a threshold. If the return on the capital reinvested exceeds the cost of that capital, growth creates value — each dollar reinvested comes back as more than a dollar. If the return merely equals the cost of capital, growth is neutral — it moves money in a circle, creating nothing. And if the return falls below the cost of capital, growth destroys value — each dollar reinvested returns less than a dollar, and the faster the company grows, the faster value leaks away.
This is the part the market forgets. A company can grow revenue at 30% and become less valuable every year, if that growth is bought with heavy reinvestment at margins too thin to clear the cost of capital. Growth is not the goal. Profitable, capital-efficient growth is the goal. The two are not the same — and sometimes they are opposites.
III. The Wild Card
SpaceX is the perfect specimen, because it is not one business but three, each with a different architecture.
Starlink — the connectivity business — is the engine. Roughly 60% margins, revenue growing near 50%, strong unit economics and a genuine competitive advantage. It is the closest thing SpaceX has to a toll: a recurring subscription on global connectivity. The launch business is the second pillar — high margins around 45%, a real moat in reusability, but slow growth near 8%. Two solid businesses, each collecting on something durable.
And then there is the AI segment — xAI. This is the wild card, and it is the living example of Damodaran’s warning. It carries the lowest gross margins of the three, and those margins deteriorated in 2025 under intense competition from other large language models and the rising cost of delivering AI. It demands the heaviest capital expenditure. It has no established moat — it competes head-to-head with the best-funded laboratories in the world. It is growing fast. And the growth may be destroying value.
There is a deeper uncertainty still. The entire valuation of the AI segment rests on an unproven premise: that AI will replace human labor, opening an enormous addressable market. If AI remains a tool that augments rather than replaces, the market shrinks dramatically, and the valuation scenario, in Damodaran’s framing, becomes terrifying. The wave itself is hypothetical. This is heavy reinvestment, at thin margins, with no moat, chasing a wave that may not arrive at the assumed size. It is the textbook condition for value destruction — and it is why the Dean values SpaceX well below its IPO price.
A fair distinction must be drawn here. A business segment whose B absorbs its A — whose growth consumes more cash than the toll generates — can be legitimate, temporarily. This is the nature of every business in its investment phase: the mature A funds the emerging B, exactly as a dual-duration compounder is built. Amazon’s retail toll funded the construction of AWS for years. What makes such absorption an investment rather than a trap is a single condition: the dynamic must credibly reverse. At some point the B must mature enough that the A reabsorbs it and overflows again — generating more than the growth consumes. Value is destroyed not when the B absorbs the A, but when that reversal never arrives, or was never plausible. The open question on the AI segment is precisely this: is the absorption a phase on the way to reversal, like AWS — or a permanent drift, with no overflow ever in sight? No one yet knows. That uncertainty is the wild card.
IV. The Toll and the Wave
Step back to the framework. Every business can be reduced to two forces. The A is the toll — what the business collects today, at a structural chokepoint. The B is the wave — the growth that enlarges tomorrow’s toll. The entire question of whether growth creates or destroys value comes down to a single distinction: does the wave cost anything?
In most businesses, the wave is mechanical — it must be purchased, dollar by dollar, through reinvestment. Mechanical growth creates value only when the return clears the cost of capital, and destroys it when it does not. The xAI segment is mechanical growth at its most dangerous: maximum reinvestment, minimum margin, no moat, uncertain wave.
But there is a rarer architecture, where the wave costs nothing at all.
V. Growth That Costs Nothing
A Freesurfer is the exact inverse of the value-destroying business. Its toll sits at a structural chokepoint. Its wave — the secular force that grows the volume passing through the toll — arrives entirely from outside, at zero cost. Visa does not pay for the world to migrate from cash to digital. S&P Global does not pay for the world to issue more debt. The index providers do not pay for the world to move toward passive investing. The growth is delivered by the world, free of charge.
Place this against Damodaran’s equation. The value-destroying business reinvests heavily at a return below its cost of capital. The Freesurfer reinvests almost nothing — the network is built, the next transaction costs nothing to process — and earns an enormous return on the trivial capital it does deploy. It is the ideal limiting case of the arithmetic: when reinvestment approaches zero and the wave is free, every unit of growth is pure value. The Freesurfer is not growth that might destroy value. It is growth that cannot.
The same spreadsheet that condemns the xAI segment exonerates the Freesurfer. The discipline of valuation, applied honestly, does not reward growth. It rewards growth that does not cost more than it returns.
VI. The Spectrum
Between the two poles lies a spectrum. At one end, the value-destroying business: heavy reinvestment, thin margins, return below the cost of capital, an uncertain wave — the xAI segment. A step in from that, the healthy mechanical compounder: real reinvestment, but at returns comfortably above the cost of capital, creating value with every cycle. Further along, the capital-light business that earns a high return but cannot fully redeploy its cash — value created, but capped by the recycling spread. And at the far end, the Freesurfer: a free, external wave, almost no reinvestment, value creation in its purest form.
The market prices all of these as “growth.” The framework, like the spreadsheet, refuses to. It asks the only question that matters: what does the wave cost, and does the return clear the bar?
VII. What the Spreadsheet Reveals
It is fitting that the warning comes from a master of valuation rather than a storyteller. The narrative around AI is intoxicating, and narratives, as Damodaran has spent a career insisting, must eventually flow into the financials — into higher margins, higher returns, lower cost of capital — or they are not value, only hope. The spreadsheet is where hope is tested.
What the spreadsheet reveals is that growth is not a virtue in itself. It is a multiplier — of value when the return clears the cost of capital, of destruction when it does not. The SpaceX prospectus contains both in one company: the toll-like discipline of Starlink and the value-destroying potential of an unmoated, capital-hungry AI segment chasing a wave that may not come.
The Freesurfer is the resolution of the paradox. It is the one architecture where growth is guaranteed to create value, because the wave is free and the toll already stands in its path. Everywhere else, growth is a question. In a Freesurfer, it is an answer.
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This content is educational and reflects a personal analytical framework. It does not constitute investment advice.