There isn't any distinction to draw between spending through the public sector and spending through the private sector. If there were a Freedom of Information Act that applied to corporations, corruption, waste, fraud, and abuse would be found there to be simply rampant, institutionalized, and openly tolerated. And all of it worked to the significant detriment of consumers -- who are the very same people as the taxpayers, just by the way.
Haymarket's example opens the door to a simple realization though. If you are about average, then 20-25% of what nutjobs try to claim as their own "hard-earned money" was actually the direct or closely indirect result of government spending.