Might have something to do with the fact that SpaceX's ambitions seem to undergo major revisions on a monthly basis. The things they've accomplished to date h

Might have something to do with the fact that SpaceX's ambitions seem to undergo major revisions on a monthly basis. The things they've accomplished to date have been pretty impressive, but they're not even in the same league as a jaunt to Mars. Besides, everything SpaceX has done is sustainable in the sense that it helps them make money, either commercially or through a government contract. There's no commercial market for Mars, and a government contract would have to be so large large enough I doubt there would be enough political support.