We're dealing with a corporation -- I'm not sure we can count of them to "pass on the savings".
If they're smart, they're figuring out ways they can own a big part of the infrastructure for an emerging market.
If Musk wanted to maximize his risk-adjusted profit, SpaceX would never have started. Remember, he financed the cashflow out of his own pocket, and went from a 100-millionaire to not being able to afford rent during the process. He himself said SpaceX had less than even chance of success, and he is known to be both very meticulous in preparation, and an incurable optimist.
Would you rather be on the first flight an aircraft makes after leaving the factory, or the tenth?
It could easily be the case that the initial launches have the lowest failure rate.