It certainly is a great read, and I applaud what they are doing. But it will be difficult to educate users on how to make the best use of new ways to search. It needs to be almost done for them. Traditional keyword searches are simple, and this is where Google gained its huge market share. By keeping it as simple as possible.
Delivering the user to a dynamic vertical as a result of a query.. It this really a lot different from a basic keyword search?
I'm not sure that Eurydice's post is all there is to it.
If I go to Google and type in "how to grow vegetables" I get a whole pile of "informational" websites. But I also get a whole pile of sponsored links selling stuff to do with growing vegetables, many of them expensive items.
So direct searches which result in mainly e-commerce site results are not the be all / end all. In my view they earn less revenue than other search types.
Oh, forgot to mention that Bing would say they are happy to be a poor second as far as SERPS are concerned. If their $millions had bought them top place then I think their "spin" would have been ever so slightly different!