That's also what Steve Jobs said in his commencement speech. He talked about the DTP industry not existing before the Mac, but by adding greatly designed fonts to the system a whole new market was created. And Steve got the fonts idea back from his college years, when he followed a calligraphy class at Reed college [0].

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[0]: https://www.youtube.com/watch?v=D1R-jKKp3NA&feature=youtu.be...