I guess where do you go from basic info that can be machine generated, to rich information that's worth consuming for things other than link previews and specific Google Search integrations?
It depends, are we pontificating as technologists, or addressing real market needs? Given that the framework is already there and widely adopted, I think the moment there is a viable commercial scenario where a company sees a profit opportunity, additional JSON-LD schemas will take off. I don't think Great Thinker technologists are likely to alter the behavior of the market at scale by themselves
