I know tonnes of people who don't use facebook and the people who do use it, it's usually just to connect with friends.
Facebook has 1.86 billion monthly active users as of Q4 2016[1]. At that time approximately 3.4 billion people used the internet. So a little over 1/2 the internet-using population, and 1/4 of everyone on Earth, has a Facebook account that they access at least once a month. If you drill down a bit about 80% of American adults use Facebook regularly[2]. You may know tonnes of people who don't use Facebook, but I think that's actually quite unusual. Outside of our HN-reading, privacy-interested, technically-competent bubble the overwhelming majority of people use Facebook, and Facebook does have an effective monopoly.
Facebook has 1.86 billion monthly active users as of Q4 2016[1]. At that time approximately 3.4 billion people used the internet. So a little over 1/2 the internet-using population, and 1/4 of everyone on Earth, has a Facebook account that they access at least once a month. If you drill down a bit about 80% of American adults use Facebook regularly[2]. You may know tonnes of people who don't use Facebook, but I think that's actually quite unusual. Outside of our HN-reading, privacy-interested, technically-competent bubble the overwhelming majority of people use Facebook, and Facebook does have an effective monopoly.
[1] http://money.cnn.com/2017/02/01/technology/facebook-earnings... [2] http://www.pewinternet.org/2016/11/11/social-media-update-20...