Quote - ... the one thing we overlooked ...

No we didn't! (see above). :O)
Personally, I agree with Winterclaw that there is still an artistic choice: not all rendering is done with linear colour space calculations in mind, and a stylistic render may well be just as the artist intends it to appear (on a screen) without any explicit application of output GC.

Edit: ... although this is all rather hypothetical from my own point of view, as I tend towards realism in materials and lighting, even when not in subject matter!

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)