Comment by toyg
It's not an easy call. Sometimes, one or two dedicated and competent people can vastly outperform large and bureaucratic consulting firms, for a fraction of the price. And sometimes, somebody's cousin "who knows that internet stuff" is trousering inflated rates at the taxpayer's expense, while credentialed and competent professionals are shut out from old boys' networks. One rule does not fit all.
It would work if old boys' networks were not the de facto pool that the establishment hired from. The one time where UK GOV did go out and hire the best of the best in the private sector regardless of what Uni they went to we got GDS and it worked very well, but it seems like an exception to usual practice.