I think that this is predicated upon a reasonably well informed and educated public. And my estimation is that the general populous is not informed enough on cryptography to be in a position to shame Ticketmaster engineers.

Also, my impression is that there is already copious amounts of public shaming. Some social media sites seem largely devoted to that. And unfortunately, I don't think most people fully deserve the verdict that they get in the court of public opinion.

This is certainly not true. Can you name an existing or historical shame-based society that you would actually want to live in?