Yes, Enercon is special that way. Sometimes it is quoted that Enercon is also special in fearing industrial espionage if any co-control is allowed to workers; but that doesn't seem to be the main reason.

Three links worth to read in German: profile at Greenpeace where Aloys Wobben expresses his opinion that unions are the main culprit for the downfall of midsize enterprises(...), taz article with examples of union-busting at Enercon (the end of that article claims, without naming names, that other eco-technology leaders think Enercon's practices are damaging the reputation of the whole industry), and another taz article about the firing of 70 employees in Turkey for joining a union (a decision of the local manager the company headquarters refused to comment).

_{*Lunatic*, n.
One whose delusions are out of fashion.}