Examples of "wow-factor novelty robots": Foodom in Guangzhou, Ekim/Pazzi in France, Creator in SF, Spyce in Boston, etc.
It seems the done thing, when that fails to commercialize, is that you spend marketing budget on expensive chefs to convince people the food is good, then you go back to your investors for more money, then you become a zombie startup...
(Edit: Oh there are many more projects... it is quite an active area globally, despite a lack of significant successes. Most making the same mistakes. See https://www.youtube.com/watch?v=FmXLqImT1wE&feature=youtu.be and https://patents.google.com/?q=food&assignee=Amf+Incorporated... for an early example.)
Thanks for the project list. I was only aware of Moley robotics.