yes, indeed.
what people also forget ist the fact that filmcomposition involves a tremendous craft as a musician. since i know both sides, i can say that it is far easier to write something abstract (you can´t do that much wrong when you´re abstract... if people don´t like it or if it´s crap, you simply can say: "it is art!"... it´s actually pretty easy to behave as if you are contemporary... postmodernism allows for anything to happen...) than something "concrete".
you really have to know both sides... as a filmcomposer, you have to be accustomed to all sorts of styles and write in those styles within a splitsecond... the fact is, that the really great filmcomposers also do write contemporary music (actually incredibly well, but hardly anyone will ever have the chance to hear such pieces) and you can hear it in their filmscoring that they are experienced in post WW2-music (does mr.C actually really think that for filmcomposers the musical history ends with mahler and stravinsky???)... it is just a huge difference... (actually all filmcomposers i know personally do also write contemporary concert music at a very advanced level... yet all straight edge, arrogantly behaving contemporary music composers i know are not able to score for film... and if they try, they come up with something like a lachenmann-string-quartet (which by itself sounds very good, tbh) in a kissing-scene, because they could not ever forgive themselves if they wrote something tonal... so... there must be something wrong here, right???) but people like mr. C. just know the abstract world... believe me... being "original" in that realm is really simple... just do something that a composer would never do... and whoom... there you go... academics will love you for being unconventional when you write a concerto for a derailing train.... in contemporary music "arbitrariness" is often confused with "originality" (as in filmcomposition or any style for that matter)
again: i am neither dissing filmmusic, nor contemporary concert music... i am just saying that it is not a black or white issue... there is good and bad in both sides...