Yeah I thought it was really interesting how the gameplay penalty is tiny but the psychological penalty is harsh. Really encouraged me to never do it again on subsequent playthroughs.
The labyrinth one is probably my favorite. It's tough to say a web comic has "timing," but the way the look on the labyrinth builder's face hits in the last panel is gold.
"Commerce" is only possible if both parties are willing to respect each other's natural right to have private property and each other's right to express consent (voluntary exchange). By trading these goods, there is a mutual benefit (social cooperation) that emerges from wanting to satisfy their own self interest.
I think this is pretty capitalist for my taste. (And please, it's not the same as corporatocracy).