Not my OC but what I've believed for years: there's no conflict between reducing your own environmental impact and holding corporations responsible. We hold corps responsible for the environment by creating a societal ethos of environmental responsibility that forces corporations to serve the people's needs or go bankrupt or be outlawed. And anyone who feels that kind of ethos will reduce their own environmental impact because it's the right thing to do.
Thoughts?
That is a terrible ethos and one that I struggle to imagine being truly compatible with any form of leftism. Yes, unethical behavior typically grants a personal advantage over ethical, but society suffers as a whole because of it; that's ultimately the core criticism of capitalist society that all leftist ideology centers on. I would find it hard to trust anybody who lives their life that way. I would have constant doubts that they would have my back during tough times. After all, it may be disadvantagous to them, and they don't want to feel disadvantaged.