So not really a graveyard. They can be registered again under the normal conditions that apply.
With Google's mission to remove the URL from the browser and these TLD's often being considered fishy (in terms of spam detection etc). I can understand there is little value for companies to obtain/keep these other than prevent squatting.
What evidence is there for this? I searched and I couldn't find anything.
Is this what you are referring to? Because that, in my opinion, is just a minor UI change -- not a fundamental shift in the browser experience, as you seem to imply.
And something that became clear during the application process was that squatting is not going to be an issue for gTLDs. There's ample time for a rightsholder to object to a problematic registration.
Turns out that translates to chinese(?) characters for Number One Store:
And the most important one .Web? Still no where to be seen.
.mcdonalds for example seems like a strange one to let go of even if just for easy memorable addresses people see in store.
perhaps their lack of easy recognition for the user as a url in that context.