Bill, are you under the impression that the profit motive isn't sufficient enough motivator?
Don't forget, a factory usually takes 18 to 24 months to build, and in this case, you could have a factory of factories. And you could have many ways of delivering the stuff to earth, including building rail gun canisters to chuck back to earth ala "The Moon is a Harsh Mistress" (one of the reasons I favor crashing the asteroid on the Moon.)
And let's not forget, the new tax laws make becoming an American Trillionaire <sp?> much, much harder. (Otherwise, why are so many investors of PRI leaving our wonderful shores?)