You would think this is a great opportunity for Apple to fill a gap in the market (and dogfood their solution too). Guess not...
That’s what happened with Logic Pro (https://en.wikipedia.org/wiki/Logic_Pro#Logic) and (sort-of) Final Cut Pro (https://en.wikipedia.org/wiki/Final_Cut_Pro#Creation)
I suspect they’d need a portfolio of applications in the CAD space to make that work, though.
A maxed out Mac Studio does very little for audio processing, and the custom audio cards that get used in the field.
Second to do the same as many users do with graphics cards configurations, one gets into gimmicks like external eGPU adaptors.
Third, Metal has not much adoption among visualisation software.
Finally, a Mac Studio can only be maxed out once during its lifetime.