In a world ruled by game theory alone marketing is pointless. Everyone already makes the most rational choice and has all the information, so why appeal to their emotions, build brand awareness or even tell them about your products. Yet companies spend a lot of money on marketing, and game theory tells us that they wouldn't do that without reason
Game theory makes a lot of simplifying assumptions. In the real world most decisions are made under constraints, and you typically lack a lot of information and can't dedicate enough resources to each question to find the optimal choice given the information you have. Game theory is incredibly useful, especially when talking about big, carefully thought out decisions, but it's far from a perfect description of reality
> Game theory makes a lot of simplifying assumptions.
It does because it's trying to get across the point that although the world seems impossibly complex it's not. Of course it is in fact _almost_ impossibly complex.
This doesn't mean that it's redundant for more complex situations, it only means that to increase its accuracy you have to deepen its depth.
Game theory makes a lot of simplifying assumptions. In the real world most decisions are made under constraints, and you typically lack a lot of information and can't dedicate enough resources to each question to find the optimal choice given the information you have. Game theory is incredibly useful, especially when talking about big, carefully thought out decisions, but it's far from a perfect description of reality