Its probably not feasible at this time with current technology even if you spent all 10 bil and went for break even. It is worth remembering though, as we squa

Its probably not feasible at this time with current technology even if you spent all 10 bil and went for break even. It is worth remembering though, as we squabble over the scraps on the surface of our planet, that all of its wealth put together is probably insignificant compared to what might be floating around the solar system in easy reach for a sufficiently space-faring species. Lots of nice building materials (that aren't all messed up by oxygen) that don't have to be drug up out of giant gravity wells by chemical rockets.