I played around with my friends surface pro and the surface studio at the MS store and while the build quality on both have been excellent, the touch & dial interface has left a bit to be desired.
I feel like the recent output has been releasing new features for the sake of doing it because it is possible, not necessarily because there are significant usability/ux improvements.
I found the dial & touch to be a bit fatigue inducing and less efficient than using a keyboard/mouse for anything beyond the first 20-30 minutes of work. Touch works on smaller screens because the physical effort to swipe a finger is minimal, but on large screens, it's fatigue inducing. I'd be guessing that Apple has tried these other input methods, but hasn't quite figured out how to address usability in this context of a large screen.
The fatigue issue of raising a hand to a screen (even if the studio is laid down flat) is pretty huge, or resting a dial on the screen taking up pixels becomes an interference to either constantly move on/off or keep stationary next to the keyboard.
Most people working hours a day on the computer can keep their hands within several inches, but the other input methods do feel gimmicky for general purpose use. Not to discount the dial entirely, as there was an old 3rd party Apple accessory maker who released a dial exactly like the surface dial over a decade ago, but targeted film & music makers who would use the dial for scrubbing video/audio.
Microsoft is definitely upping it's ante, but there is a certain touch of refinement that feels missing, while Apple is slowly degrading in their small touches of refinement that bring user happiness.