What do you mean $380B? This "fair market value" forecast also includes $147B for starlink enterprise and $75B for starlink direct-to-cell. So almost $600B all in.
I mean that Starlinks consumer broadband is valued at ~38x revenue, when other telcos are valued around 1.5x revenue. That revenue is 2533% more expensive, why pay such a big premium for something that's essentially the same?