It is annoying.
But on the flip side, if the link was included, someone would have invariably commented that the "article reads like an ad". The authors can't win.
I disagree. I think it's MUCH worse when, for example, you read an article about a Kickstarter project on Mashable or TechCrunch only to find that clicking on the hyperlink leads to other articles on those sites about Kickstarter and not the actual project link. I think those sites have gotten better at linking directly when commenters complain.
This is a growing anti-web trend -- the tendency of web properties to only self-link. I assume someone somewhere has actual metrics justifying this, but it's the antithesis of what the web is about, but it's exactly why the only links in this article are to other Bloomberg Business Week articles.