As with so many thing, we constantly test new ideas to see if they resonate with the general search population.
Folks have to keep in mind that Bing is a decision engine, focused on "task completion". We've stated this from the outset, so trying things like these types of tests help us determine if this type of SERP behaviour strikes a positive or non-positive note with searchers.
For exmaple, I did htis search on "gout" today and get sort of a version of what was described earlier in the thread. Not the whole article, but part of it, with a "click here to read more" option.
SERP example: [bing.com ]
...and yes, we partner with those providers, who then supply the content.