You're assuming a studio pays list price when they order several of these at once. Furthermore, I wasn't comparing the Z8 to the Mac Pro. I was stating the Z8 offers capacity for 2 processors. The Afterburner card is an fpga specific to prores codecs. ProRes is an Apple codec. And as far as I know, the card is only utilized when using Final Cut Pro X as of this post. A third party like Adobe or BMS would need to work with Apple to align their software with the card so that their software may utilize the card's functionality when working with ProRes codec video.
https://support.apple.com/en-us/HT210748
DGX-1 is for AI. How would a film studio leverage a cluster made for deep learning? I'm very curious. The RTX render server works in conjunction with a local workstation and allows many to connect to it. You don't send video off to it. Render farms exist for a reason.
https://www.nvidia.com/en-us/design-visualization/quadro-servers/rtx/
The Z8 may cost more, but it's certainly more usable and upgradeable without Apple's nonsense. And anyone who's relied on HP for high end business support knows they have same day or less repair or component swap. The only reason to go with the Mac Pro is if you're heavily reliant on the Apple environment and or you require use of Final Cut Pro X. Meanwhile, Premier, Resolve (paid version), Media Composer, et al. are available on Windows.
No where in my post did I suggest the Mac Pro should or could be compared to a $2,000 computer setup. Don't put words in my mouth or waste my time with your silliness.
NVidia is the "leader" by one way or another in deep learning, AI and computer. Others including AMD are slowly gaining on them. Can you use these professional units from NVidia on a Mac Pro? These units can be scaled in size to a small server room or a whole building if you had the resources.
The ProSumer version of the Mac Pro is the iMac Pro.