No, I think I worded my first post wrongly. I was surprised myself how rich deep blue the Sky itself gets with low turbidity (both in 3D and reality :- ).
I have some architectural photography friends, professionals, and I know how much heavy processing they do to skies. Ultra-rich Blue has been post-production favourite style for long time. And before that, it was often created with polarising filter.
But as I've proven (mostly to myself) in my quick test, turbidity alone and reasonable altitude can create quite a lot of this look. Just not as extreme. So the end result is always a combination of the natural type of Sky reached under certain conditions (clear day and higher altitude) and processing (HDR, Contrast, Saturation,etc...).
I don't think ACES Output alone is close to what is currently common standard for photography post-production (much heavier contrast because we consume all content in digital media). I find the Corona's team version of ACES Output transform NOT to be very powerful, I think it's sort of midway, not weak, not strong. Definitely weaker than most contemporary processing done on cameras, and lot weaker than phones.
To be honest, default tonemapping/processing on current phones is like ACES, +6 Contrast, + 100 Vibrance :- ).
But this is super individual, my iPhone 14 Pro default is like +6 Contrast but -50 Saturation :- ). Very strange look at first, lot closer to ACES than my former Huawei.
But most camera jpeg profiles (straight out of camera) always had deeper contrast in blacks (deeper first half of S-Curve) and boosted contrast in blues (because it increases saturation of Skies, but not of human faces, so it still looks natural but also nice and punchy).
I actually thought of this lately because I found the same result in both photography and renderings I do across the past 10 years. My idea of ideal "contrast" has been moving up and up... maybe the social media is brainwashing me a bit. But then again, my famous architectural photography friend was printing books with +1000 Saturation Blue Sky already 15 years ago :- ).