You counter your own point…

You cannot trust people to do what is right for the environment. They wont do anything until they see the effects for them selves and by then it is far too late to do anything meaningful. And if/when they do finally care all they see is a lot of green washed campaigning by every company claiming to be green when non of them are and they have no real choose and a lot of confusion. You need strict and effective regulation to curve this behavior in companies.