There might certainly be a way to do that, but there are a number of unknowns. It is difficult to assess something that is spread over a period of 25 to 30 years.
Perhaps some risk lies in presenting cost estimates that are higher than the initial ones. If you present the cost of buying frigates at $75 billion from the outset, it may well scare those making the decision, whereas, if the estimated cost is less, the estimate could be accepted and approved more easily.
However, I'm not pointing fingers at anyone. It is difficult for me to talk about specific factors, given that I did not participate in the initial cost estimates. In addition, we did not see the details of the cost estimates that were done in the past.