I would say that we prioritise allowing people to make these choices above whether or not they make them correctly. "Libertarianism", I believe it's called?
Libertarianism is a wonderful ideology, though it works best when people make rational decisions.
People don't, unfortunately. See the criminals. See the fact so many people are saddled with debt. It's not just a problem with the system - it's a problem with the people in it, from top to bottom.
Is it possible to synthesise a commodity-based economy with a non-commodity based economy? That seems a contradiction in terms.
The synthesis would be what American conservatives call "socialism," that is, social democracy/social capitalism. A system where there's a free market overall, but the state engages in regulation and redistribution to ensure the poorest aren't left behind.
At least, that's my idea. Even if the idea of a welfare state and communism aren't synonymous as is commonly alleged, they do have one common trait in mind: no one should be homeless or actually have to fear starvation.
Especially in a nation with as much wealth as the United States!
Conflicts? Do you mean competition for resources or military contractors colluding with the government to engage in increased war spending/external military adventures?
I said that it's what Communists allege. Ask a Communist.
My thoughts would be that industries need raw materials, and raw materials are generally held in the poorer nations. So, those industries in turn would influence their governments to acquire those materials.
Whether one believes that's true or not, is up to them.
Which interests, and how is society harmed?
See the world prior to labor laws.
Unless the capitalist acts 100% out of the goodness of his heart, laissez-faire capitalism will not be good for us. Likewise, unless humans in general act 100% out of the goodness of their hearts, communism won't work either. Really, despite the odds the systems have with eachother, self-absorption is the downfall of both.