It can serve somebody's greed the same as any other kind of control. But your chances of having a meaningful voice at your local town hall are a whole lot better than that you'll be able influence what they're doing in some city five thousand miles and a culture away. Nations do not exist simply to do war upon one another. America has always been a democracy for governance by the majority with a legal and moral system that creates countervailing individual rights. Sure, its behavior often falls short of these ideals, but the ideals remain.
Corporations exist to make money for their officers and shareholders.
There's no place in this simple creed for rights of the majority, and the minority be damned. Government must continue to do these functions, and that means taking responsibility for things like economic development, environmental issues, fair wages and work standards, and human health and welfare. I like cheap shoes as much as anybody else, but sometimes cheap is too expensive. I'm not arguing for protectionism as a general rule, but there's a time and a place for it. I'd like to see the standard of living in Bolivia improve to what it is in Wisconsin, but I wouldn't like to see the converse.