Except you can't start a space company without a lot of your own money much like Musk did. You need the big capital first to launch a company that requires hundreds of millions in capital.
I'm sorry I was not 100% clear.
With term "entrepreneur" I mean to include only people who already made it and prove to society they are entrepreneurs - i.e., they already sold the first company and have $$ and name.
So my point is that instead raising money to build path.com, color.com, or some other stupid web 2.0, young entrepreneurs should follow Musk steps.