Game B succeeds through leveraging the advantages of collective intelligence, collaboration, and increasing omni-consideration. When different people come together in a group to work on a solution to a common problem, they are with the right facilitation able to come up with solutions that none of them individually could have created. Additionally, solutions come up with by a large group of normal people are generally better than a small group of experts. Typical example: markets leveraging the ingenuity of an entire nation compared to a planned economy.
At the same time collective intelligence can be understood from the angle of learning as a collective. According to The Late Upper Paleolithic Model, humans were neither cognitively nor behaviorally "modern" until around 50,000 years ago. Jordan Hall characterizes this shift in human capacity as the emergence of our collective intelligence toolkit, including abstract thinking, planning depth, and symbolic behavior.
Yuval Harari called this emergence the Cognitive Revolution. Humans became the first species that could learn collectively rather than merely individually. Collective learning meant that with each generation, ideas and knowledge accumulated, and more information was retained than lost, allowing humans to become successively more powerful.
Hence, the human evolutionary advantage was constituted in the ability to learn collectively and collaborate. It is encoded in our genes.