"Mr. Musk lists his ultimate goal as "enabling people to live on other planets". Once upon a time the space race was driven by the competition between capitalism and communism. Now it is driven by the competition between individual capitalists."
With or Without NASA, SpaceX Is Going to Mars, Motley Fool
"What it means for investors: Unless and until SpaceX goes public, most of the above probably seems academic. We can't invest in SpaceX today; perhaps we never will. Be that as it may, one thing is clear: Mankind is going to Mars, and sooner than you think. That this will open up the possibilities of new investments -- literally out-of-this-world investments -- seems almost certain."
Changing The Way We Explore Space, earlier post
"SpaceX has their own vertically integrated launch and spacecraft company that can produce absolutely everything needed to do this mission. And they have enough money to do missions on their own. More importantly they have a leader who is compelled to explore Mars and he owns the company. They do not need NASA to do this mission."