The Wait Buy Why blog did an article on Neuralink and went into Elon's motivation and strategy for making a business that makes the world a better place. It's a really great model.

Model --> https://28oa9i1t08037ue3m1l0i861-wpengine.netdna-ssl.com/wp-...

Full Article --> https://waitbutwhy.com/2017/04/neuralink.html