Why Outsource When Workers are Willing to Telecommute?

An anonymous reader asks: "Corporations and management resisted telecommuting for years, now jobs flow to distant nations. Did telecommuting become acceptable because of the greater distance? Because some form of on-site management persists? Because labor laws are favorable? Because a well paid middle class is a political threat? Is it really as simple as money? I'll work cheaper if I can choose where I live and work. Must I leave my country to do so?"