Actually yes. In every game theory scenario you have mentioned, you are assuming non-communication prior to the event, whereas in the past national teams set out an exact pecking order and what each would do in advance. Team tactics mean that among the people on the team, they are not guessing and strategizing about how to beat each other, but that they have a set agreement and they are strategizing rather about how to work together to defeat others. When Skah was paced, for example, do you honestly think that he was worried about what his pacer was going to do? No, he wondered what Chelimo (?) would do. He had his plan set. When El G was paced repeatedly in championship races by his countrymen, there was no game theory relevant component to his relation to his countrymen. They were determined to work for him, much like the domestiques would work for Lance without testing him and gauging his strengths and breaking away when he grabbed water, etc. By contrast, with Gebrhiwet and Gebremeskel, there's been no evidence that they think at all in terms of sacrifice for the other. So, there's more of the classic game theory approach. They distrust each other. Each aspires to the victory. They may think that working together will lead to a better outcome for the one who's paced and to no medals for the pacer, so neither has an incentive to pace.