Originality does not have to be completely unknown new kinds of sound. Schonberg himself stated that there was much music to be written in the key of C major. In fact, mathematically speaking, the number of permutations with even classical tonality (let alone romantic or post romantic or even early modern) is nearly infinite. A similar misconception to the oft-repeated cliche of monkeys at a typewriter typing eventually the complete works of Shakespeare. Believe it or not, someone calculated the numbers on this, and determined it would take almost infinitely longer than the projected age of the universe to do this. Musical permutations are just as complex.
On the other hand, somebody who assembles music from various actual sources - like James Horner with his ransacking of classical music - or apparently this person (whom I have never heard anything from) does from film music sources - is completely devoid of originality. The most original film composer of all time is probably Herrmann, but his music is heavily influenced by Holst, Rachmaninoff, Vaughn Williams and Wagner. So the assumption that I am asking for shocking new things every second is not at all what I meant.
On the other hand, somebody who assembles music from various actual sources - like James Horner with his ransacking of classical music - or apparently this person (whom I have never heard anything from) does from film music sources - is completely devoid of originality. The most original film composer of all time is probably Herrmann, but his music is heavily influenced by Holst, Rachmaninoff, Vaughn Williams and Wagner. So the assumption that I am asking for shocking new things every second is not at all what I meant.