With environmentalism, things must be planned. Lots of people going around with lots of different blue prints of how to 'save the Earth' won't work with the environmentalism idealogy. Just as central planning actually destroys economies, it destroys environments. This is why capitalism is seen as 'rape' of the earth. The betterment of Man is civilization's compass.
Man comes second.
Or not at all. Aaron Wildavsky wrote that the term pollution is culturally defined, and originally referred to the spiritual pollution of men from coming into contact with women. The same reasons why that won't work is why Free-market environmentalism will only end up destroying the free market. Not for you or your neighbor, but for the dolphins and the whooping cranes. Therefore, they make themselves the only writer of the Environmental Blueprint they want us all to follow.