How many BPH actually PRINT (own and operate the Presses) their own books?
How many set their own type (digital plate making)?
Hasn't the actual Production of physical books been contracted out for years?
From what I have seen, BPH still perform needed services
Editorial (Selection, polishing)
Art department (face it, many self pub covers are almost as bad as the 40's pulp days. A few are very good.) Page layout.
Marketing (The Spin Mill
) and delivery (digital format distribution servers)