"Buy stock in the dath ilan companies that would build the arcologies, sell stock in Earth companies that employ lots of sad exhausted people at low wages, start a company that makes real chairs, sell fiction books written by smarter authors at a much higher price to smart rich people here who have nothing fun to read... that kind of nitwit, low-effort foolishness would already be enough to make more money than I could use personally.  Somewhat more value to Earth from, say, my trying to reverse-engineer how our rating systems work based on their Network user interface, and displacing Amazon's front-end with a new product recommendation system, so that your entire economy would have an incentive to manufacture products at much higher quality at a slightly higher price.  Much more value if our governmental forms work better than yours when copied here, something that may not be true at all, and I can talk one country anywhere into adopting them and accepting a lot of immigrants and exporting real science and real medical research."

"Buy stock in the dath ilan companies that would build the arcologies, sell stock in Earth companies that employ lots of sad exhausted people at low wages, start a company that makes real chairs, sell fiction books written by smarter authors at a much higher price to smart rich people here who have nothing fun to read... that kind of nitwit, low-effort foolishness would already be enough to make more money than I could use personally.  Somewhat more value to Earth from, say, my trying to reverse-engineer how our rating systems work based on their Network user interface, and displacing Amazon's front-end with a new product recommendation system, so that your entire economy would have an incentive to manufacture products of much higher quality at a slightly higher price.  Much more value if our governmental forms work better than yours when copied here, something that may not be true at all, and I can talk one country anywhere into adopting them and accepting a lot of immigrants and exporting real science and real medical research."