Italian is strictly better than Sandwiches, so it's not, but Chinese has no alternatives going top-right.
I don't understand the focus on the convex shape (which doesn't seem to be the Pareto frontier here).
What if, to make it more obvious, Chinese was only slightly bottom-left of the Nash Equilibrium point. Would it still not be part of the shape? Would the choice still be between Sushi and Italian?
Isn't Chinese also on the Pareto frontier?
Italian is strictly better than Sandwiches, so it's not, but Chinese has no alternatives going top-right.
I don't understand the focus on the convex shape (which doesn't seem to be the Pareto frontier here).
What if, to make it more obvious, Chinese was only slightly bottom-left of the Nash Equilibrium point. Would it still not be part of the shape? Would the choice still be between Sushi and Italian?