I agree with this article completely. I've worked on a few platform implementations for publishers and this is a very crowded, complex space. The business model is really more around service and support, and no publisher is going to let another publisher embed themselves that deeply into their company (not to mention the paranoia about giving a potential competitor access to your article library and metadata). Platforms evolve over time, and you don't want your competition deciding how you should evolve.

Besides, it's not like there is a shortage of AAA publisher platforms out there. A company like Gawker is also not remotely at the scale that a lot of these platforms can handle: the big thing right now is multi-media CMS that allows a single article to be published online, in print, via syndicated newsfeeds, in multiple languages, etc. Someone like Gawker's business model is far too limited to even address the problems that a lot of publishers have.