Just as a thought experiment, suppose the best prediction that could be made right now would see the earth's carrying capacity drop to under a billion people in

Just as a thought experiment, suppose the best prediction that could be made right now would see the earth's carrying capacity drop to under a billion people in the next 50 years. What would you expect to see different, in media, in papers in top journals, in public discourse, than we see right now? I think the world might look just as we see it today.