Cost of RAM and SSD seems like a secondary challenge. Trying to piss up a waterfall is more in line with the reality that products that are first about design and second about capability face when entering the current workstation and laptop markets that have been iterated on for decades and haven't seen a dramatic new redesign ever.

The closest such advance in recent years didn't happen and instead turned into the macbook neo. Apple could have released an OS for the iphone pro max model of phones that allow them to boot Mac OS when attached to a docking station. And sold a laptop formfactor docking station.