How about the fact that the Chicago media are heavily biased towards the Cubs? Don't you think that pretty much all the news people fawning over the Cubs and treating the Sox like an afterthought has some affect on the public believing that going to Cubs games is the "cool" and "in" thing to do?
"Nellie Fox, that little son of a gun, was always on base and was a great hit-and-run man. He sprayed hits all over."
Yogi Berra in the New York Sunday News (July 12, 1970)