The argument for Calibri was documents were being consumed more on the screen than on paper. Serif’d fonts were considered more legible on paper but not on low

The argument for Calibri was documents were being consumed more on the screen than on paper. Serif’d fonts were considered more legible on paper but not on low res screens of the day. An argument could be made that with high res screens now common we should return to the more legible serif’d fonts. Unfortunately serifs are seen as old fashioned so I doubt that will happen.