I think it's more that one of the consequences of painful public procurement processes is that they incentivise public officials to avoid procurement as much as

I think it's more that one of the consequences of painful public procurement processes is that they incentivise public officials to avoid procurement as much as possible. This leads to larger/maximalist projects being specified and a proliferation of "framework agreements" under which small projects are undertaken, both of which seem to benefit the large incumbents disproportionately.