I agree, the main reason (besides the fact that LaTeX is the greatest for any type of document, and that greatness is extended by XeTeX,) is because I still believe one must have good file structure. As much as CMSes and Wikis are the rage today in web trendiness, you still need to manually organize them in some way, and this doesn't solve the problem that the article hints at about sticking them on a network share. If it's gonna be lost in a network share it's gonna be lost in a wiki or a CMS. The difference is you might not be running an indexing service for your docs on the network share but searching is intrinsic to the wiki.
And also, git for tracking changes, version control isn't simple, I find that MediaWiki's version control is more annoying to use than git.
Outlines in Word is excellent for ensuring that a document has excellent structure.
I use latex a lot (more than Word) yet people do not see its limitations. It would be best if Latex is replaced with something like open source Adobe Framemaker or something.
To split a document up into multiple files. But the disadvantage is that Latex only has single includes - so you can not split a document up that much.
(This is also a problem if you use images with equations such as those created by xfig (i.e. pure latex or PSTex PicTex). Usually most people would like to include an image as a separate file.
Gah that thing almost drove me over to Emacs. By almost I mean, I couldn't get full vim functionality in Viper and gave up, some commands just can't be replicated. But org-mode is a very very nice tool. The current vim alternatives like viki and vim-outline do not compare.
Anyway, well done MS Office.