In France it has taken time, and there are still some holdouts (most notably the national ski school, ESF).
I believe it's mandatory already in several Swiss resorts, I know it is in Zermatt.
I really hope the ESF will mandate helmets for all instructors, this would go a long way to normalising them.
I don't think wearing a helmet when skiing is comparable to commute cycling. I think motorcycling would be closer. In both cases you're going at relatively high speeds with quite long breaking distances.
I believe it's mandatory already in several Swiss resorts, I know it is in Zermatt.
I really hope the ESF will mandate helmets for all instructors, this would go a long way to normalising them.
I don't think wearing a helmet when skiing is comparable to commute cycling. I think motorcycling would be closer. In both cases you're going at relatively high speeds with quite long breaking distances.