It does seem funny that Yelp would complain about the premium organic listings.
But with Google owning Zagat it makes sense that Yelp wouldn't be the first result. I feel we often mistake Google for a search only company even though they are increasingly becoming the GE of tech and have every right to start giving their subsidiaries the premium "organic" results.
The big thing I think this does is open them up to competition in the long run. It would have to be anything special, maybe a s simple as the Google from 5 years ago (before they bought another company in seemingly every sector)
And from the looks of the design it seems like Bing is starting to look a lot like the Google of old.