"Renowned astrophysicist and StarTalk Radio host Neil deGrasse Tyson doesn't think a private enterprise, such as SpaceX, could ever lead a space frontier. "It's not possible. Space is dangerous. It's expensive. There are unquantified risks," Neil deGrasse Tyson tells us. "Combine all of those under one umbrella; you cannot establish a free market capitalization of that enterprise."
Keith's note: Neil deGrasse Tyson is an astrophysicist who does TV shows and runs a planetarium. Elon Musk is a billionaire who builds rockets that fly into space. Neil deGrasse Tyson goes out of his way to talk about how you can't do things. Musk just goes out and does those things. deGrasse Tyson is afraid to take the risks that go with exploration. Musk takes the risks.
My money is on Musk.