That was covered pretty early on, albeit not those exact words. Supply, demand, opportunity cost, and logistics. Nothing in society comes for free, even resources as basic as rocks or sticks, and greed will always prevent people from doing the right thing. Communism would be great, if it worked, but it doesn't and it won't. Socialized policies might, and we already have some, like water, electricity, police, roads, education, et cetera, but that doesn't come for free either, and it never will. It comes in the form of taxes, which everyone gives off of their paycheck.