"If I had never dropped in on that single calligraphy course in college, the Mac would have never had multiple typefaces or proportionally spaced fonts. And since Windows just copied the Mac, it's likely that no personal computer would have them."
He's either kidding or thinks lowly of others. Between the Mac's introduction in 1984 and this speech in 2005, it's very unlikely that no one else at Apple, Microsoft, or elsewhere would have thought about this centuries-old, basic concept from the printing world. It would definitely have been introduced sooner or later in computers.