@qwwera I would imagine everyone wants better performance, I just don't see the ARM chips stacking up to something like an 18-core Xeon, or even a multi-cpu configuration. The Pro users typically work in a production environment so stability is everything, I'm not sure that the "typical" applications they are running have the same offerings for the ARM architecture(at least not yet).
Apple has had all the common frameworks running in Ax chips since the beginning of Ax chips. Most executable app code is spent in these frameworks anyway: it may be apocryphal (but I don’t think so), but MS Excel in the PowerPC day is said to have spent 70% of its time in the Toolbox call DrawString(); since Apple had redone QuickDraw in PowerPC Native code, 70% of Excel ran natively with no work from Microsoft.
Apple has done it before but not a trivial task. Hardware is just one part but how about porting MacOS and applications ? And going forward to keep Apps to support on both platforms.