Which is why capitalists spend so much money making sure the government is on their side, and keeping the people divided. As you've suggested, I'm sure you and I could think of a better system in an afternoon over a few beers. And yet... better systems struggle to emerge.
Most societies are a mixture of several economic, political and cultural systems, usually with some religious influence hindering changes. Over those beers, I would discuss which mixture would work best for what topic. Always keeping in mind that there will be some new issues because of it.