Complex sentence: Problems surface when such czars try to protect turf and reshape the environment to gain as much control as possible, becoming fixated on their own activities, careers and territory/turf to the detriment of those around them.
Split into simpler sentences: Problems surface when such czars try to protect turf and reshape the environment to gain as much control as possible. They become fixated on their own activities, careers, territory and turf to the detriment of those around them.