Chapter 2: Is Free Trade a Universally Good Global Economic System?

What was confusing in this section of Chapter 2 was how the author described "winners" and "losers" of free trade. "Winners" were meant to be thought of as those who were privledged and in particular, big corporations. "Losers" were thought of as indigenous peoples and poor workers in developing countries. These two descriptions fit winners and losers because both the theory and practice of free trade are flawed. My question is why is the theory and practice of free trade flawed if each country is getting what they want in terms of consumer equality? This section was the only thing confusing to me...