@AndersMunkN I have been searching some time ago. Not too many studies. One prominent perspective from NEJM (https://t.co/ImjmFJYhJd) and one obs study (https://t.co/byeHqbjjVr).
@jamesbrandecon This is super interesting. Have you looked on the demand side? Who are the consumers going for niche products? Do consumers that once went for a niche are generally more variety seeking? Is there a path dependence, i.e., I try a niche product once and do so in the future?