The point would be that the stuff we would use to explore/colonize the solar system would be made on the Moon with a relatively low investment in stuff having t

The point would be that the stuff we would use to explore/colonize the solar system would be made on the Moon with a relatively low investment in stuff having to be send there to set up the base and mining/production process. Ideally only humans themselves and a few personal items would be send up from Earth, with everything else having been produced in orbit.