This is a great article from Convince and Convert:
Will this move make it harder and more expensive for businesses to succeed on Facebook? Probably. But it’s not as if you can just log off the platform, throw up your hands, and go home. There are two billion people using it. Don’t give up. You just need to get better, and get smarter. Thus, here are the 9 Antidotes to the Facebook Algorithm Squeeze. None of these are “buy more ads.” Follow them, and you’ll very much still be able to succeed on Facebook, even as a business page.