It is possible, but it is an additional problem added onto the problems already associated with such a book. Honestly if they do a lore book I imagine it will only be an app or digital only variety. The question though becomes would it be highly profitable to make such a book when we have a lot of wikis which also contain that information. Perhaps a fan could compile a fan made wiki sourced lore e-book in PDF form provided they do not try to make any money from it since they do not own the content derived from the sources that made up the content within it.
