Achieving the optimum economy by allowing human nature to do its thing was supposed to be the way capitalism works. To me that would mean including scumbags, somehow the invisible hand would create paradise.
And capitalism's main advantage is that tries to account for the scumbag human nature (competition) and attempts to use that to its advantage (creating an economy that strives to be efficient). Other systems pretend like that human nature doesn't even exist, and everything will be fine if we ignore it.
That's what governing IS.