Is Musk capital constrained? Does he have projects out there that he'd like to do but can't get investors for? This seems doubtful to me. Whereas stamping out malaria is always capital constrained.
http://www.spacex.com/sites/spacex/files/hyperloop_alpha-201...
http://www.teslamotors.com/sites/default/files/blog_images/h...
It is on its face obviously severely capital-constrained.