The basic math is that to even have a chance of operating here Facebook would have to apply the mandated censorship policies either just to users of its core service in China or to a spinoff service that is kept separate from the core service.
Básicamente, para tener la oportunidad de operar aquí, Facebook tendría que regirse por las políticas chinas de censura, aplicándolas solamente a los usuarios del servicio principal de China o a un servicio indirecto que se mantenga separado del servicio principal.