Ask HN: How Do SpaceX's Stated Goals Make Financial Sense?
Today, SpaceX's revenue comes from selling its services to the US government. If the US government foots the bill to send humans to Mars, then SpaceX would certainly stand to profit handsomely. But if that's what Musk has in mind, he's not in a position to dictate the timeframe. Additionally, NASA's stated goal is to send humans to Mars in 2030, not 2020. Thus, I think we can establish that Musk intends for SpaceX to finance the mission.
At best, the first humans on Mars will do some science experiments, take a bunch of video footage and pictures, and then come back to Earth. But where does a ROI come into the picture?
Musk likes to talk about colonizing Mars, and sending humans to Mars is certainly a necessary first step. But then we have to send infrastructure to Mars. Nevermind actually creating a livable environment through terraforming, creation of an atmosphere, seeding the planet with an abundance of life, etc. Just facilitating the construction of sustainable buildings that would allow long term human survival will be a technological feat requiring huge investments that don't have obvious paths to returns besides enabling the next step in the colonization process. Each subsequent step magnifies this point.
What does SpaceX stand to gain, from the perspective of a for-profit company, if it pivots from selling the use of its rockets, to using those rockets to send humans to Mars on its own dime?