MacOS is still relying on design cues from the days when all they had was a 7" monitor screen. Additionally, it's designed for the hardware it's run on: a sing

MacOS is still relying on design cues from the days when all they had was a 7" monitor screen. Additionally, it's designed for the hardware it's run on: a single screen laptop or desktop computer. Yes, it can run on multiple monitors, but's not really designed to do that. I don't think Apple has ever totally internalized the idea of multiple monitors or even big hardware (except for a brief time when we had a real Mac Pro).