We've been writing HTML for a couple of decades now. There have been dozens (hundreds?) of WYSIWYG editors and nothing has really caught on. My hypothesis is that unlike other mediums like paper or video, the elastic nature of the web makes understanding the positioning paradigms/box model/etc a necessity that no visual tool can really abstract. By the time you understand all that, it's just faster to write and maint…
Ultimately we didn't get all the way there, which is part of why we closed up shop