Almost all business applications have horizontal menus and ribbons that take up a decent percentage of a landscape monitor instead of utilising the “spare” screen space on the left or right, and a taskbar usually sits at the bottom or top of the screen eating up even more space (yes I know this can be changed but it’s not the default).
Documents are traditionally printed/read in portrait which is reflected on digital documents.
Programmers often rotate their screens to be portrait in order to see more of the code.
Most web pages rarely seem to make use of horizontal real estate, and scrolling is almost universally vertical. Even phones are utilised in portrait for the vast majority of time, and many web pages are designed for mobile first.
Beyond media consumption and production, it feels like the most commonly used workplace productivity apps are less useful in landscape mode. So why aren’t more office-based computer screens giant squares instead of horizontal rectangles?
Won’t they both show 16:9 or 4:3 but with black bars either vertically or horizontally?
Yeah but to show a 16:9 on a 4:3 it would be so small you would have more than half your screen taken up by black bars. It’s the whole reason 16:9 was created to also help with the flat and scope film formats. To finally get rid of the awful practice of pan and scan.
That just isn’t true. Viewing 16:9 on 4:3 doesn’t mean half your screen is black bars.