is by itself very opinion-based.
First, it asks for the best without providing any metric to evaluate the best. Then it specifically asks for counsels: should. Like the policy in The Workplace, no one can really tell you what you should do. At least not on SE.
Now the OP is aware of it, and specifically asks for non-opinion based answers. Instead they want answers to base themselves on published research (game theory, political science, etc.).
The problem is, I don't think any published research can really answer that question, for exactly the problem I mentioned before. At least not in general terms. Financially, it might be best to choose one option. But for humanity, it might be better to choose the other option.
Humanity and our societies developped themselves as a result of both collaborative efforts and competition. This, for example, is illustrated by published research on the number of naturally left-handed people. So depending on the details both answers have merits.
Furthermore, I doubt any of the choice would provide 100% one way, while the other would go 100% the other way. Meaning the gap is probably not that wide. And one single vote won't affect the whole result.
At the end, I don't think that question is answerable as it is.
Due to the bounty that the OP placed on their question, I can't vote to close it. This is the reason for the current discussion. Do you think that question can be answered in the terms providing by the OP? Or should it either be edited or closed?