You might not remember when "desktop" computers were almost entirely placed on t...

You might not remember when "desktop" computers were almost entirely placed on top of desks, but that was common for several decades.

https://en.wikipedia.org/wiki/Apple_II

Even many low end business desktops today are designed with the intention to be placed underneath or behind the monitor. It tended to be the big, clunky workstations or consumer PCs that were relegated to underneath the desk.