Agreed. And very few blogs or news orgs were ever exclusively on FB, but look what happened. After enough were on there, you had to be on there to get any of your content viewed, because your subscribers stopped being subscribers to you and your blog and started being subscribers to FB, and FB became an intermediary between you and your readers. (That, by the way is not just another RSS reader. And Spotify is not just another podcatcher.) Thus, FB had all the control, and once they had consolidated control, they began to turn the screws, refusing to show your content to people who had followed you on their platform, unless you paid up.

Why could they do this? Was it because you were exclusively on their platform? No. It was because your readers were exclusively on their platform. And that is what Spotify is already accomplishing. Slowly but surely, more and more people are using Spotify for all of their listening needs.