The original draft had more detail. As did the backstory piece we wrote. Editors cut it down for page count. (It was originally a foreword to a book on web form design, which was all about the buttons and the fields.)
Re:The $300M Button (2009)
by CyberDildonics on Tuesday March 08, 2016 @12:05AM
(#11243641)
just be glad a clickbait title had a worthwhile article
Without that, the article does seem to claim that just changing the label of the button had that effect.