Integrating organizations can be extremely difficult, especially former competitors. The fit and role of each unit needs to be communicated across the whole organization.
According to the attached article, there was poor communication, leading uncertainty and key departures. Few knew where they stood and what future they had in the combined entity.
After a string of duds, Fox Studios needs a change of direction. Movies that actually brings in profits. Movies that people actually want to watch. For the sake of the remaining people, hopefully the leaders can turn it around in a more collaborative manner.