SPCX DCF: Bridging $2.1T Market Cap to 2035 Free Cash Flow
A discounted cash flow model that gets from today's $2.1T market cap to a defensible 2035 free cash flow number. The assumptions that matter, isolated.
Implied 2035 FCF
~$140B
Discount rate
10.5%
Terminal growth
4%
Reverse-engineering the price
At $161, a $2.1T market cap implies a free cash flow trajectory that reaches ~$140B by 2035. That requires Starlink to scale to ~30M subs at $80 blended ARPU (~$29B revenue, ~50% FCF margin), Starship launch services + Starlink internal usage to generate ~$45B in implicit value, and AI1 to print ~$25B in revenue at hyperscaler-class margins.
Each of those is achievable in the bull case; none is conservative. The current market cap is pricing the bull case for two of the three legs, and the base case for the third — pick which third.
Sensitivity tables that matter
Starlink sub count and ARPU drive 60% of model sensitivity. Starship cost per kg drives another 20%. AI1 adoption drives the remaining 20%. Holding two of three at base case and stressing the third (Starlink subs to 20M, or Starship $/kg to $400, or AI1 to zero) each implies ~25-30% downside from current price.
Key takeaways
- $2.1T market cap requires ~$140B 2035 FCF — achievable, not conservative
- 60% of model sensitivity is Starlink subs × ARPU
- Bear case on any single leg implies 25-30% downside
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