Not that I've ever used a Mac so I might have remebered this wrong from reading the comics in the late 1980s or whenever it was ... but wasn't Microsoft Excel the original and best Mac spreadsheet, of which a pale imitation eventually surfaced on the PC?
[Edited to say: actually I did use a Mac for a month, but I got sacked from that job after objecting to the MD calling me a liar. Probably nothing to do with the Mac.]