It is also due to capping the profit on a contract. The only way to make more money is to enlarge the problem. Some general wants a gold-plated titanium feature? "YES SIR!" "Here is the change order for your signature, SIR!"
Yet if you don't cap the profit, there is incentive to cut corners. So you lose, or you lose.
Yet if you don't cap the profit, there is incentive to cut corners. So you lose, or you lose.