The headline on the article (and the <title> tag, from what I can see) is "The 20KB Computer Program That Changed The World"; the title used here seems like it's deliberately reaching for an anti-Apple spin. I mean, WordPerfect absolutely sold hundreds of thousands of DOS computers, but "Microsoft's early success stemmed from a [insert size of WordPerfect] program they didn't make" would...raise eyebrows, wouldn't it?