It is unlikely, but Thomas Andrews, the chief naval architect who built the RMS Titanic, never thought his boat would sink.    I think it’s fair to say Facebook is so large and has so much power and control that the only way Facebook will die is if the US Government and other countries break Facebook up. However, at the end of the day, Facebook is an advertising company, and if everyone stopped using their services, yes, this could contribute to the end of Facebook.