Really? Are we sure we can't figure this out? Who believes that?
Private contractors seem to be very expensive. No-bid contracts are obviously not competitive. And when the tax payer is picking up the bill, is there really any incentive for a contractor to keep costs low? Who advocates for the taxpayer?
And how much corruption, kick-backs, lobbying, political favoring, porking, and other questionable activity goes on behind the scenes that increase costs?
This isn't rocket science, it's mostly about accounting and accountability.