User blog comment:DaNASCAT/Wikia's Quality Blitz - Beating Down Bugs/@comment-168424-20130130220640/@comment-4839035-20130130222933

That's basically the reason for Monaco and then Oasis: Wikia grew waaayyyy too much. Now, we have ads all over the place so they can afford to host 200,00 wikis, which I would guess 90% are inactive. That, and secretly buying out other wikis without the user base's knowledge. However, they seem to have (for now at least) managed to find enough adspace, and things are actually getting better.