Not the OP but I think there is something to the notion that whatever is scarce but in demand is what will be expensive and of course the inverse would be true as well. What this means is humans however they do get resources will be able to put those resources to use abundantly frankly nearly for free on things like digital intelligence but other things will become scarce.. one could speculate about what those things are but even if they're not scarce today they could become scarce in a relative sense where they become relatively valuable and that's what people will be getting selling to each other