One in five public contracts is defective – to the advantage of the private vendor – and if anybody thinks that home rule and the fragmentation of government subdivisions increase the taxpayers’ control on things, think again: Most of the abuses occur at the local level.
Ant that is not all. Even when a contract is sound, but something goes wrong in the construction or delivery of the service, or the contractor gave a low bid, the government typically issues a “change-of-order” modification and ends up paying more.
That is why almost every public project has cost overruns. More often than not, these very contractors are donors to the two dominant political parties or local politicians.