It goes to the so-called "transaction costs" - which seems to be specialty of the US economy. Specifically this refers to added complexity to things that can be otherwise done easily and inexpensively, and then hiring an army of middlemen and helping professions to solve that artificially created complexity. Examples include: - private insurance schemes with their Byzantine bureaucracies, - automobile based transportation that requires armies of auto mechanics, insurance agents, loan officers, salesmen, policemen, road and garage construction crews, and administrators to run smoothly; - suburban homes that again require armies of construction and maintenance crews, including road construction and maintenance, loan officers, real estate agents, insurance agents etc; - preservation and maintenance of accumulated wealth that require armies of stock brokers, financial advisors, investment bankers, and kindred speculators; - preservation of the US imperial ambitions that requires armies of mercenaries, security agents, weapons procurements, etc..
If you take the transactions cost out of the US economy, there will be not much left, as most commodities are imported. It thus follows that a sizeable and growing chunk of the US economy is basically unproductive activities disguised as "services" - which could have been altogether eliminated by a more efficient organization of the economy.
However, those unproductive activities are remunerated, usually at rates that substantially exceed the minimum wage. That money has to come from somewhere, because unlike economics where things are created out of thin air, by the power of the invisible hand, in the real world resources must be created and someone has to pay for them. The trick of economic "theories" is make that someone invisible.
So the answer to your question is: "somebody has to pay for armies of middle men who oil the artificially created Byzantine complexities of the US economy, so more and more people have to work more to create more and more wealth that seems to 'disappear' in the black hole, but in reality they fund the unproductive middle men. It is like what they used to say about the Russian banks - nye propadnyot, no nye powoocheesh (which translates as "it won't get wasted, but you won't get it back").
Wojtek