They used to do that, but the "problem" they ran into is that the people the average person knows in real life don't produce enough Facebook updates to keep use

They used to do that, but the "problem" they ran into is that the people the average person knows in real life don't produce enough Facebook updates to keep users glued to Facebook all day. Time spent on Facebook = money for Facebook (more ads can be shown) so it's more profitable for them to push "recommendations" for more "engagement."