I had failed to generate this as a hypothesis, but now that you bring it up, it makes the second possibility appear much more likely since it provides a possible motivation for the non-cooperativity. (This looks a bit like the conjunction fallacy, but it’s not really because possibilities that I had simply failed to think of play a role here...)
I think he answered your question by providing an example on the spot.
I had failed to generate this as a hypothesis, but now that you bring it up, it makes the second possibility appear much more likely since it provides a possible motivation for the non-cooperativity. (This looks a bit like the conjunction fallacy, but it’s not really because possibilities that I had simply failed to think of play a role here...)