What's interesting to me is the dichotomy between Musk and Bezos vision for humanity in the Solar System. Musk is Mars focused almost exclusively. Bezos has talked about space habitats (O'neil cylinders for example [3]) as how he thinks things will play out. Certainly room for both.
Bezos isn't playing, he's going all in, selling $1 billion of shares a year to fund Blue Origin [4]. One way to look at this situation is Musk and Bezos competing to be king of transportation infrastructure for the Solar System. High stakes indeed.
[1] https://en.wikipedia.org/wiki/BE-4
[2] https://en.wikipedia.org/wiki/Rocketdyne_F-1
[3] https://en.wikipedia.org/wiki/O%27Neill_cylinder
[4] http://www.cnbc.com/2017/04/06/bezos-is-selling-amazon-stock...