@georgeob1,
From my vantage point, it doesn't. 100% free markets also do not work unless they have regulations against fraud and equal conditions for trade.
There's no perfect economic system, but capitalism can work if governments don't try to control monetary systems and lais·sez-faire.
Cheap money under Greenspan and Bernanke has only exacerbated our economic problems that affected the whole world's economies. Rather than reward savers, they rewarded spenders. Their dumb actions still affects all of us, and they have never learned from their mistakes. When the financial institutions went bankrupt, our government stepped in to save them but not main street. Government intrusions are dangerous and effects the wrong results for consumers.
No economy can survive without having a functioning infrastructure and top-notch educational system; in that, I blame the conservatives who's only rhetoric is "government spends too much!" WWII provided the best example of when our government had to spend huge amounts of money that created a huge national debt to survive. That lesson seems lost to the conservatives in today's politics; "cut spending, and don't dare talk about taxing the rich more." During WWII, we all paid for the debt; the rich and the poor.
The loss of more government jobs - including teachers, police, and firefighters makes us less secure. That's a cost that must be absorbed regardless of increasing debts, and by cutting other costs including generous lifetime pensions and health benefits of government workers. When our governments continue to cut services at the expense of providing these atrocious and overly-generous benefits, there is an obvious disconnect in rational management of tax revenues.
Our governments continues to create the greatest handicaps for the middle class, and I don't see much change in the foreseeable future.