I found Wikia a great product name which evoked the feeling 'this topic may be too obscure for Wikipedia, but here you can make an entire Wiki about it!', and I never understood why it was changed to 'Fandom'
It’s particularly dumb given it was literally entering the lexicon as a generic term in a lot of instances.
There are advertisers who specifically want to reach fans (gamers, tv/movie fans, etc), the name change was to make that ad sale conversation stronger: https://about.fandom.com/mediakit