I kinda laughed too when I learned that Breitbart had a sports section, but I saw a link to this article on Twitter and started reading.
Though the article totally misses in the sense that it doesn't address the GoR, it does hit on some overarching themes that have been discussed here for quite a while
1. Large State Flagships vs. Private Schools There are just 2 private schools in the B1G and SEC combined. There are more than twice as many in the ACC. (There are many more alumni being cranked out at good ol' State U and it's much more likely that in-state, non-attendees will root for State U than the local private school with which they have no affiliation.)
2. Geography - Though the conference has a presence up and down the Eastern Seaboard, the core of the ACC is clustered in two states (VA & NC). Though these are two fast-growing states, that's still too compact when compared to the B1G's footprint or the SEC's footprint.
3. Markets - Obviously there are many large markets in the ACC footprint, but the ACC doesn't dominate many. Outside of the aforementioned states on NC and VA, where are they number 1? They are either, at best, the second school in the market in which they resident (FSU, GT ,Clemson, Louisville, Pitt & Miami) or school that is secondary (or worse) in a pro-sports town (Pitt, BC, Miami, Syracuse - even if you give them NYC).
4. Demographics - In general, these schools are just not as big as the schools in the B1G or SEC or PAC12. So in addition to the college football cultural difference that some of these schools have to overcome, these schools would have to draw in many more non-students/non-alumni to pack a stadium like they do at Michigan, Penn St., Tennessee, Ohio State, Alabama or Texas. Outside of VT, Clemson and FSU, the football gameday atmosphere is just not like the atmosphere at those larger schools.
5. Basketball vs. Football - I'm a Husky, so I wish basketball held more influence, but we know the deal in this area. Yes, UNC-Duke is the biggest and most talked about basketball rivalry in college basketball right now(thanks, ESPN), but will that continue when Coach K inevitably steps down in a few years. (He'll be 67 in Feburary).