With over 1 Billion Users on Facebook alone, you can imagine how busy newsfeed around the world must be. On both a personal and business level, competition for time in front of your friends or customers is high.
During the past 15 years we have seen Facebook evolve into a strong community platform. As a business, Facebook want to encourage you to have good strong conversations and to build relationships with your friends / customers. In order to do that, they have changed their algorithms to focus on story telling, visual or written (though video does travel further) and have placed less focus on selling.