What was done, Performance ratios. Exclusive access to key data even permits money to be made as Eddie Murphy and Dan Ackroyd demonstrated with pork-bellies and orange juice in the film in Trading Places. Insider dealing is the obvious further reference. Other organisational members have an interest in breaking such dependency. Then we have the problem of service contracts and service level agreements - getting the flexibility we need.
Departments nurture their own experts.
Roles are duplicated across the organisation as whole. Techies - replicate. Possession of knowledge and expertise is a factor in legitimisation processes.