We get rid of it, Google/Facebook/etc. shut down. While social media is of arguable benefits, Google has provided incalculable value to the world. Ads are the magic money fountain that give them the power to organize all of human knowledge, a phenomenal resource anyone can tap.
2nd option... add a useful/not useful flag to every search result, so users can flag blogspam, content farms, etc and help keep the results useful.