The Olympic does not hold precedence as a justification for including a given sport. They do not have fixed guidelines, and they include sports on a case by case basis. Therefore, it seems unlikely that this would force the IOC to accept other mind games. Bridge and poker, for instance, rely on an element of chance, which chess does not. This is a criterion that impacts their appropriateness for assessing human potential, and a ground on which other mind sports ought not to be included.  Furthermore, it may well be true that the Olympics cannot continue expanding due to lack of space, and the inability of most countries to host such large events. However, chess is one of the examples where the least space and infrastructure is required. This is an argument for not having infinite sports, but it provides no reason to exclude chess from a finite selection.