The more the third world countries export, the lower the price they get because they are glutting the market. But good for US and other big business. Good for already rich foreign investors. Allowed to do this, they would gradually achieve self-reliance and eventually produce commodities for exports. Many reputable academics such as Dani Rodrik, John Ralston Saul and Michael Chossudovsky are onside.
International trade respects the sovereignty of nations.
Globalized 'free trade' does not. Globalization is just a new name for neocolonialism. The former colonial powers have been replaced by the multinational corporations who are far more tyrannical overlords than their predecessors ever were. At the very least, the colonial powers built schools. Imagine if the US had never built a manufacturing industry, but had merely relied on exporting its primary industry products.