I would say most of these things are happening at the Gov't Sectors like DoD and other agencies. As usual, gov't got load of BS and politics. So, they rather hire someone externally who's not a gov't employee to be a project manager. After all, this freelancer does not have any agenda other then completing the project and move to next job.
Wonder how much a freelancer project manager w/ Top Secret Clearance... is $150/hr far fetched?