I'll try to be short because I think the others should weigh in. Again, our members view this from a particular perspective.
They are companies that are used to dealing with very large entities that have very particular requirements in order to supply them. The government in that way is no different from the large OEMs, so what frustrates companies and what makes the government different from large suppliers is the transparency of those requirements, and the fact of whether or not they change post facto.
When our companies complain of red tape, it's that they don't know what they need to do to be successful, and new requirements seem to appear after they get involved in the process. Frankly, some of them seem to be arbitrary and coded to the whim of the procurement official, rather than running according to a process that is consistent.
I think that is one thing the government does not do as well as, for instance, the large OEMs, which have spent a lot of time generating various efficient supply chains. They are better at that than the government is.