I feel like you are intentially misrepresenting his comment to flex your history knowledge. English privateers captured the Madre de Deus. When they brought it to port, the cargo was worth roughly half the entire national treasury of England at the time. I think that is pretty equivelent to space mining, no?
We've been mining platnium and aluminum for all of humanity, so we know they exist, "The TAM was incredibly apparent". We know there are astroids worth 1 quadrillion dollars. So, if SpaceX has a 1% chance to capture that, thus the valuation.
We've been mining platnium and aluminum for all of humanity, so we know they exist, "The TAM was incredibly apparent". We know there are astroids worth 1 quadrillion dollars. So, if SpaceX has a 1% chance to capture that, thus the valuation.