The Cask of Amontillado
In the story, one of the characters is, while inebriated, chained to a wall and bricked up alive.
The story can be used as an analogy to many silos, which are often open and welcoming at various points in their existence. But once they generate a user base, they often start to wall up their users inside.
- Twitter and its decision to discourage the third-party applications that initially brought many users into the platform
- Google and Facebook discontinuing XMPP support, etc.