With those composers, I think it depends on if you are listening to music that is intended to stand alone, or if it was originally intended to support a film work. Even there the line can get a little blurry. There is music by John Williams that is definitely on the classical concert circuit, like the Emperor Theme, but even then the form is different than what you hear in the film. I believe Zimmer has some music lifted out that stands alone. But even then, music still might only make it to Pops concerts rather than the standard repertoire. Another example, I used to listen to Elfman's original Batman soundtrack a lot - but you can tell it's much more wandering and moody than standard classical music.

But just because a piece of music is programmatic doesn't mean it's not classical. Beethoven's 6th symphony is a great example.

If you go back and watch Disney's original Fantasia, that's a good example of the difference between music that supports film, versus music that stands alone - in Fantasia's case, the film was structured to support the music.

There's definitely good classical music out there that has a pleasing "sweep" to it like film music. Maybe sometime get out the headphones, sit back, and listen to the first movement of Sibelius' 5th symphony. I like the Bernstein version most.