Sadly, I don't really think the question at hand is complex enough to be more constructive than the single sentence I used. But let's try: could you reduce a movie like "Taxi Driver" to a single scene and keep all of its value? I categorically state "no", but you could probably with sitcoms-with-background-laugh-tracks ("probably", my experience with them isn't very extensive).

Basically, some music is made to be digested in small, radio/club-sized pieces and I argue that most of it does so not to fulfill an artistic vision. There are some exceptions, using this opportunity to maximize "streamlining" (I mean, I listen to some Eurobeat, so I fully understand that) and St Exupery's famous "Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away", but that's definitely not the rule.

Also, people already drew pretty good comparisons to opera and other stuff that loses too much by being listened on a single track basis.