I wonder if anyone's ever done a study on how bonobos would react to a situation in which they would get a regular supply of food regardless, but would get treats such as grapes (which I'm to understand that they really enjoy) in exchange for completing tasks? More specifically, would the bonobos who do the tasks and get the grapes care if some bonobos chose to not do the tasks and not get grapes?
Ultimately, that's the situation that we face today with programs such as SNAP; some people do tasks in exchange for a medium that they can use to treat themselves, and those who choose to not complete tasks are given only basic food. But obviously with humans, there are those that feel that being rewarded for their behavior isn't enough, but rather they feel that those who don't complete tasks should be punished by means of starvation.
If I had to speculate, I'd bet that bonobos would act with more 'humanity' than humans do.
They don't need to do a task, they don't have to pay to pick fruit from a plant like we do.
Control their access to the plants on the other hand...