It really does. It's as if I was paying UPS to pick up my packages, but it only delivered 2/3 of them. I wouldn't be wracking my brain very long to come up with the same solution.
My guess is that the problem was that there were no incentives for politicians to think of this as a problem, and seeing as it survived a "scandal," probably some incentives not to care. I'd like to know who was getting the contracts, and who their connections were.
I also wonder if there was some faction screaming about not imposing crushing regulation on the noble businessmen who were providing a crucial and critical function to protect our civilization, and if they overlapped with the connections:)
EDIT: Also, this is a simple matter of paying for what you want. If you want people to get rid of the prisoners, pay them to haul them away. If you want prisoners delivered somewhere, pay them for what they deliver.