This is long trodden knowledge dating back to the 1960-1970s when NASA studied it. At Earth orbit you only double the total power/meter^2 and that boost is no

This is long trodden knowledge dating back to the 1960-1970s when NASA studied it. At Earth orbit you only double the total power/meter^2 and that boost is no where near covering the added cost of space launch for anything (even with SpaceX).