I don't disagree with this, but couldn't you say this applies to something like 90% of college sports fans?
Most fans are largely only watching their team, regardless of style play.
If style of play is so important, then why aren't Grinnell basketball games sold out and broadcast on ESPN?
I will disagree that if TJ continues to run a defense heavy style, and ISU wins, goes to Sweet 16s, etc, that ISU fans will suddenly stop watching. Hilton will still be sold out. Fans will travel in waves to KC, NCAA sites, etc.
Winning is biggest (maybe only?) factor for fans.