A paradox

Here is a post from a Canadian environmental blog. It poses a paradox as it considers the positive environmental steps taken by the world's largest retailer.
From the blog:

The superstores’ green conversion is astonishing, wonderful, disorientating. If Tesco and Wal-Mart have become friends of the earth, are there any enemies left?
We environmentalists developed a picture of the world that seemed to be repeatedly confirmed by experience. Big corporations destroy the environment. They are the enemies of society. The bigger they become, the less they can be constrained by democracy or consumer power.


TK: I think the bigger that retailers become, the more they must listen to consumers. And thus, the "astonishing" conversion.