Remember the first ever spreadsheet Visicalc? Until Lotus 1-2-3 was released in 1983 it was the platform of choice for business and on the Apple II. In the late 70s and early 80s, the business choice was the Apple II.
And on others such as the popular TRS-80 and Commodore PET business computers and the more home oriented Atari 800, all before the PC. Apple did have a pretty good lock on the education market though.