The mass of the structure need not be entirely sourced Earth not should it. Space industries must eventually transit to resource extraction from the rest of the

The mass of the structure need not be entirely sourced Earth not should it. Space industries must eventually transit to resource extraction from the rest of the solar system rather than solely from Earth. Labor is extraordinary expensive, yes, at first. That is because our robotic technology isn't good enough and that people don't live and work in orbit yet. That will change with time as we begin space colonization.