Elon Musk will have rockets that can be reused 100 times before discard. The rockets can already return to their launch point for reuse...something that NASA was never able to accomplish. Musk is designing a system so that lunar miners can send their tritium*...gold...platinum...and..."other" back to low Earth orbit where it'll be gleaned and absorbed into the commerce below,(WSJ B-3;05-11-18).
*Tritium is a hydrogen complex packed with energy and there are oceans of it on the lunar surface. Musk knows a spoonful of Tritium can run New York City for a year...and...its procurement on the lunar surface similar to dipping buckets of ocean water on our planet. Getting it from the lunar surface to Mother Earth presented a big hurdle...or...is it any longer?