I agree with your premise. I certainly don't want or need canned music. I find it somewhat annoying. i would rather converse and interact with those around me during down time. But, someone, somewhere, somehow must think it IS good for business. I, like most others participating in this thread, am extremely curious as to the business decisions behind the entire game day experience, including but not limited to the choice of music.
I think the gameplay planning is just scattershot. I don't see any real plan, at least any that I can understand.
I always bring up the ND in game experience, but they do it extremely well. They do the same thing every opponent third down. They do the same thing every third down stop. They do the same thing on every ND first down. They do the same thing every time the opponent has a false start, offsides, etc. The PA guy knows what to do. The band leaders know what to do. The guy running the video board knows what to do. It is almost like they make a plan, then have gameplay planning/strategy sessions with all of the people involved so that they are all coordinated. Sarcasm intended. GT gameday looks haphazard.
Have the band play chords, and have the PA guy scream "it's third down", but play a history video of GT defense stopping offensive plays. When the defense is able to hold, play celebratory pumped in music with further back videos of the GT defense stopping an offensive play while fans are on their feet and screaming. Have text to thank the fans for helping the defense stop the opponent. Whatever it is, do that every single third down. Have everyone in the stadium know that is what will happen on third down. That won't make the game any more interesting to a fifty year old who has had season tickets for twenty five years, but it could help build fans it is seven year olds who are currently sleeping and paying more attention to their frozen lemonade than the game.
The video replays at ND come directly from the NBC staff. Why can't GT pay for an extra person to be with the ESPN crew to put together professional replays from the actual TV cameras? I don't know if they use students in an audio/video club, or how they get the replays currently, but the quality should be much better than what we have now.