Why do wind turbines all turn clockwise?

 

It was only a couple of days ago that I woke up to the fact that all wind turbines turn clockwise. This suggests that it is probably an historical quirk. I don't think those who say the rotating blades give lift are correct. Propellers on a plane pull the plane forwards to create an airflow over the wings, the shape of which generate the lift. This site suggests that early Danish wind turbines turned anti-clockwise but includes some stuff about yaw and furling that I will have to look up.