You're trying to justify SpaceX's valuation using Starlink, but it's clear from the S-1 that it makes up only for ~5% of SpaceX estimated TAM.
> Our base-case forecast entails $56 billion in revenue for Starlink in these niche and growth areas by 2035, representing about 45% of the identifiable market we’ve sized
source: https://www.morningstar.com/stocks/spacex-what-investors-nee...
Then either the TAM for Starlink is ~20x bigger than reported by SpaceX (I doubt they would downplay themselves in such a way) or the whole SpaceX TAM is ~5x smaller (much more realistic, if not more than that)