Most companies these days are atleast trying to invent green solutions if for no other reason, then solely because it is good marketing.
Souls! Souls! Damn, why didn't my spell checker pick that up in my titile? It should have known my context. Oh well, the scientists are probably selling their shoes, too, for global warming.
Since the beginning of history people flock to where the money is. Follow the money and you get your answers.