The issue was never the average person. Corporations have always been the issue. Even if everyone on the planet tried to live as green as possible, the corporations would still cause too much damage for us to undo. The only way the average person could have made an impact was by attacking the corporations and their means of polluting the planet. That meant sabotaging their facilities. But the climate change movement was too focused on peaceful protest, and there has been evidence that points the blame for this on the corporations once again. For everyone, the issue wasn't that they weren't willing to live green enough (which is true that most people just didn't bother, but it isn't what caused the issue of climate change in the first place and wouldn't have been the answer either), it was that they weren't willing to risk their life and privileges to dismantle the system that caused it. The threat of climate change was not imminent or tangible enough for people to take real action.