I am sorry for good people genuinely trying. I understand that it is a hard problem to solve - but private companies chose their contractors and suppliers and as well facing similar issues. Somehow private companies are managing to evaluate results and found accountable persons while governments are known for being very undemanding customers.
"We have tried hard, but failed" is still failure despite any good will. Good will with courage and having skills with competence are very different things and often govt employees have neither because otherwise they will be more successful using this skillset in private companies.
> but private companies
Two things:
* The government is often in the situation where they want to fund some effort, like R&D. Say China is way ahead of the US in drone technology, and the US wants to catch up because that's a risk (we see how drones are used in the military now). So someone will have money to spend on US companies who will do everything they can to get as much money as possible. How can the government employee know which company is abusing? First they are all abusing, and second they are all failing already (otherwise the government wouldn't be in this situation where they need to fund them). This is a very hard problem.
* When it is about buying e.g. an IT solution for the company, I have seen private companies fail just as much as governments. McKinsey and their friends do the same bullshit to everybody, be it government or private companies. Don't think that private companies don't waste money. It's just that when it is the government, it is transparent and we like to complain about the government.