Gulen is very clear what he wants, (ultimate control of everything from poltics, commerce, education, social structures, etc.,) Greed is center to the Gulen Movement. The followers brainwashed from an early age and are the foot soldiers obeying Gulen''s barking orders of "You must work into the arteries of the system until you reach all power centers" they are merely following their Hocaefendi's orders. Gulen is a prophet to them.
Since his followers were expelled from Turkey, he tries to build a community in Germany with Seyran Ates.
Maybe they even have infiltrated the German state...