Since many years now, there are more and more Websites which don't work properly under Mozilla. Each time I write to the Webmaster, I receive this answer. We have not optimized your website for Mozilla Firefox, whose technology is outdated. Many websites don't display interactive maps in Mozilla. I understand that Mozilla has a very good system for protecting personal data and prevents sites from tracking users. I also understand that Mozilla allows for efficient cookie deletion, which commercial companies probably don't appreciate. Is this the only reason why so many companies don't want to optimize their websites for Mozilla?