I'm not sure Gutenberg is the right analogy. Matt didn't invent WYSIWYG content management or even the notion of web based blogging software. He had a significant role in popularizing it, and certainly WordPress has continuously raised the "ease" bar, and become a leading platform. The latter - popularizing - is arguably of equal importance: Apple didn't invent the smartphone, but it sure as heck popularized it. I just don't think it should be conflated with invention.