Theoretically, but to make that work you're talking about a far greater advance in space capabilities than "just" launching from earth. You're still talking abo

Theoretically, but to make that work you're talking about a far greater advance in space capabilities than "just" launching from earth. You're still talking about launching 10 millions tons of material, and you're going to need local infrastructure to do everything like "make launch vehicles and fuel" if you want it to be an efficiency win over launching from earth.