We literally spend millions on licensing Share Point to do what WordPress can do much better and easier. I'm not saying we're going to start writing everything in PHP, but being able to experiment with WP could affect the bottom line in a big way.
People who develop in MVC tend to be developers.
Disclaimer, I work on the UX/UI side of a company that focuses solely on sitecore.
Just the overall replication of Windows desktop for the backend management UI seemed a bit extreme. :)