Obama and Bush

In Obama's speech--or anthology of American political cliches--he said that markets "expand freedoms". How does that work? Like if I buy chicken mcnuggets I make contributions to freedoms around the world? Watching Bush leave in disgrace: in the US and around the world, I could not help think: who in the world would invite that man to give a speech. I then thought of the answer: the polygamous Arab oil princes and kings, of course.