> overall it is a cost What does this mean? Seems like it is a cost from some perspectives and a positive from other perspectives. From the perspective of gre

> overall it is a cost What does this mean? Seems like it is a cost from some perspectives and a positive from other perspectives. From the perspective of green businesses, likely a positive. From the perspective of society, removing the negative externality is likely a positive. The only cost it imposes is on those who were previously externalizing their costs on to society.