In what sense is a radio station a platform? Most commercial radio is just piped playlists from a corporate office and a few DJs on top. Newspapers don't have t

In what sense is a radio station a platform? Most commercial radio is just piped playlists from a corporate office and a few DJs on top. Newspapers don't have to publish your letter to the editor and your local TV station won't publish your sternly worded letter either...