That makes no sense to me at all. How can anyone believe this is how things work? Take Diablo for example, the original people who made it no longer work for Blizzard however they are able to call it Diablo still. Take the Call of Duty games, I highly doubt the original people who made the first one still work for Activision yet they can still call it Call of Duty.
Take all of the EA sports games. Take all of the Need for Speed games. Almost every game/movie/tv show, or any other form of media has "sequels" and very rarely do the original people all have something to do with them, yet the company they were under is almost always able to keep the name.