Where will he manufacture the rockets and fuel to lift the heavy industries into space? Where will the exhaust from all the rockets go? Has he done the math, or is he just shooting from the hip?
I think the concept he embraces involves mining resources in space and beaming down power collected from the sun. Lofty goals, but the number of roadblocks to seeing that are immense. You’d need one world government, centralized planning and organization at every level of industry to manage resources, rock solid control and predictability of all government and military systems and mass migration to take advantage of the space based resources.
Rockets and robots are the easy part.