It is rather difficult to find an NFL team lacking in popularity. Today’s sport’s world, entertainment world really, features the National Football League at the center so that even the least popular NFL team is doing alright for themselves relative to other organizations and teams in the same sort of business. The NFL is king.
Grabbing a slice of the NFL pie is a financially-rewarding thing which is why when ownership stakes have become available in recent history we have seen some of the wealthiest people in the world do everything that they can to jump in. If you have the ability to cut a check to get into the club you can set yourself up with a money-printing machine for the foreseeable future.