The traditional standard display for business computers was 80 column text (with either 24 or 25 rows).
Business software, roughly speaking, falls into two categories:
Horizontal applications like spreadsheets and word processors, don't need to be designed for a particular display; they can just use however many columns you happen to have at run time.
But vertical, or line of business, applications tend to be form-based; they use fixed-layout forms for things like entering orders. These need to be designed for a screen with a certain number of columns. Unsurprisingly, then, these were usually designed for 80 columns.
In the days of text displays (i.e. when the hardware showed not an arbitrary bitmap, but a fixed grid of character cells), the usual standard was 80 columns, but some machines could do more. The Amstrad PCW, for example, showed 90 columns. The DEC VT320 had an optional 132-column mode, albeit not very readable on a 14-inch screen. One could imagine designing forms on DEC hardware to use 132 columns, though readability would seem to suggest sticking to 80.
Were any form-based applications on any system, ever designed for more than 80 columns? (Considering only systems that displayed text in a fixed number of columns, not modern graphical interfaces, which make different tradeoffs.)