The problem is that state's aren't really motivated to get things done in a cost efficient manner. If the government in SA is like the US, employees are not rewarded for doing anything beyond the bare minimum to prove that they are still alive. In a private business, the employees have to help the business towards its goal of making money, so all of the incentives are aligned to be successful (employees want promotions and not to get fired, the investors don't want to lose money).