It is not how capitalism works. At first individuals should start prefer local production and production of more green companies. And only after that corporations change their politics. For example, there is a yearly rating of green electronics (how much green electricity company uses, how clean production is, etc.) but customers do not care. And if customers do not care, why corporations should care?

How are large corporations going to reduce meat consumption? Or reduce the number of international flights people take for vacation? How will they make entirely unsustainable industries like fast food, fast fashion, and cruise lines go out of business? To say nothing about the rampant inhumane working conditions and cruelty in those industries.

Certainly a lot of the issues are dependent upon the world's industrial infrastructure and that is not something that we necessarily have a handle on. But all the people building the new sustainable infrastructure are just regular people and individuals who decided to do something.