These things that you describe must happen will never be accomplished by private companies because they are all wealth destructive behaviors, and the organization that does is will not make profit off of these endeavors: nobody can afford to buy the stuff being described anymore, at least in the United States. I know that I certainly can't afford to change out all of my homes infrastructure in preparation for climate change, and almost everyone that lives around me is in a worse financial situation than I'm in.
The process will be completed by governments, not by private corporations. This is probably part of the reason that corporations and the extremely wealthy fight against the knowledge of climate change in the public sphere: it will eliminate their 'monarchic' power structures and replace them with the highly effective centralized power structures that we had pre-Reagan.