One of the great things about arbitrarily breaking contracts is that you save money in the short term, and signal future contractors that they need to charge even more exorbitant rates in future government contracts because you can never be sure if/when you will get paid.
Arbitrarily breaking contracts usually trigger clauses where you have to pay damages/penalties for doing that, so Accenture most likely isn't loosing any money here. All government contracts tend to have clauses like these, at least where I'm form.
