This. If a company wants to to be a platform and enjoy certain protections from responsibility for content posted by its users, it should be required to open th

This. If a company wants to to be a platform and enjoy certain protections from responsibility for content posted by its users, it should be required to open the protocol and the data and prevented from exercising absolute control over the user interface and from being able to deny access to some organisations, 3rd party clients, etc. If that kills a bunch of business models, do be it.