Given Apple’s current locked-down trajectory with the Mac, the Mac Pro was gonna die eventually, and it’s for the best that it does given it was reduced to little more than a massively overpriced Mac Studio grafted onto a useless PCIe backplane; a $12k grift, basically.
PCs at least are still modular and expandable; for now.
Assuming most of Hollywood isn’t already Windows based given that OS still takes up 66% of the desktop market while Mac only takes up 14%.
And given Blender’s viability on the professional stage with Flow’s success, I wouldn’t be surprised if some smaller studios who weren’t knee-deep in the Autodesk and either MS or Apple ecosystems either were already Linux-based or moved over to Linux.
As for the hobbyist, they’ll just use whatever OS they’re already running generally, be that Windows, Mac, or an alternative, and I’m being vague with ‘an alternative’ so as to also count BSD or even OpenIndiana if one swings that way, in addition to Linux.
Also, the Mac Studio, assuming the M4 Max and M3 Ultra both are more powerful than the M2 Ultra, should outpace the latest, and apparently final, Mac Pro.