Also, Oracle has been through this perhaps thousands of times. Apparently the major profit center for companies like Oracle is being late and more expensive than predicted. For example, see this quote from the book, Heuristics and Biases: The Psychology of Intuitive Judgment:
"... a recent General Accounting Office report on U.S. military equipment procurement concluded that only 1% of major military purchases involving high technology were delivered on time and on budget."
That book says the problem is due to a sociological mistake. My understanding is that it is entirely intended, a way of making money from the largely hidden military purchases of the U.S. government. For the U.S. government, killing people is an enormous, extremely profitable business.