Do I think the presence of professional sports negatively impacts the "buzz" around Rutgers' athletics? I do.
Do I think that angle is severely overplayed on this board? Yes.
For one, your comparisons to other towns, such as State College, don't carry as much weight when you consider that the majority of people attending games in those locations travel a great distance, from places like Pittsburgh, Philadelphia, Maryland, Virginia, Ohio, and even New York and New Jersey, where they are also surrounded by pro teams. Do they have as many pro teams as exist in the NY/NJ area? No. But does it really matter? A Pirates is a Pirates fan, and a Mets fan is a Mets fan. The Mets fan isn't also a Yankees fan, so he doesn't have an extra team competing for his time and money. Same goes with Giants v. Jets, Knicks v. Devils v. Islanders, and Knicks v. Nets.
RU has more than 67,000 students (and the Camden campus is only an hour from High Point Solutions Stadium). According to RU's web site, about two-thirds of its 470,000 alumni live in New Jersey. That's 315,000 people. And New Jersey isn't big; HPSS is no more than two hours or so from anywhere in the state. We're not even including those alums who might live in the Lehigh Valley, Philadelphia or NYC.
The point being: There are plenty of available customers for RU football. Some might not show up because a lot of the games start at noon, some might not buy tickets because they have family conflicts, and sure, some might choose to spend their sports ticket budget on season tickets to a pro team. But the two primary reasons, as far as I can tell, that RU doesn't attract more attention are (1) a lack of success and (2) an apparent lack of connection between the alumni and the school. The people on this board are clearly an exception when compared with the average RU alum; that's evident from football attendance right on through donations.
First and foremost, RU needs to win. It also needs to do a better job of fostering relationships with and creating a better college experience for its current students, so they want to donate to academics and athletics, return to campus, and attend games in the future, and work to repair whatever cracks are in that bridge with alumni.