You will not regret, if you analyze her companies you will see that he transform every market he worked. Paypal is still (my opinion) the best online payment system, space x is the first private company to explore the space and already has a lot of success, tesla is only starting but i think everyone will need and want a eletric car with free charges all over the US.
Yes, I agree that Elon would likely take the company to profitability but it will be interesting to see if there is any money to be made by stock owners of today when Tesla hits profitability tomorrow.
