Space tourism industry. Remember the Venn diagram that Elon showed? Spacex is going to lower the cost of going to Mars so that billionaires can afford to go. T

Space tourism industry. Remember the Venn diagram that Elon showed? Spacex is going to lower the cost of going to Mars so that billionaires can afford to go. Then lower the cost so millionaires can afford to go. Continue lower the cost until more people can afford to go. Eventually, more people can afford to go to Mars and return safely to Earth. Why would you go to Mars? Because its there. And because I can. Space research industry. With all these people going to Mars there will be demand for new and advanced technology. And there's probably more industry that will sprout that we cannot foresee now. Its a whole new frontier out there.