I don’t disagree with you, but this is unrealistic. Starting the whole principles of society from scratch is never gonna happen. We should focus on making sure that, while we still “build and build”, it is in a sustainable way, using renewable energy sources, as well as nuclear.
Edit: this is not saying we don’t need societal change, there are definitely lots of things that need fixing, but it’s never gonna be done all at once, completely different. What needs to happen is we focus on the core of the problems, fix that now, and then it will end up looking completeley different than what we have today.