Life is a risk. exploration of the frontier was a risk. driving is a risk. Risk is inherent in everything we do. Why should manned space exploration be different?
Manned space exploration is very risky. There will always be a need for the government to contribute many dollars to space exploration initiatives that benefit all mankind. The government (NASA) is ultimately responsible to identify and correct the cause of mishaps.
As the government provides needed resources while distancing itself from oversight, there is added risk that NASA will be unable to get back on track when a serious setback occurs. They will have little or no in-house experience and expertise.